"Green Mars" - читать интересную книгу автора (Robinson Kim Stanley)

PART 2 The Ambassador

Asteroids with elliptical orbits that cross inside the orbit of Mars are called Amor asteroids, (if they cross inside the orbit of Earth they are called Trojans.) In 2088 the Amor asteroid known as 2034 B crossed the path of Mars some eighteen million kilometers behind the planet, and a clutch of robotic landing vehicles originating from Luna docked with it shortly thereafter. 2034 B was a rough ball about five kilometers in diameter, with a mass of about fifteen billion tons. As the rockets touched down, the asteroid became New Clarke.

Quickly the change became obvious. Some landers sank to the dusty surface of the asteroid and began drilling, excavating, stamping, sorting, conveying. A nuclear reactor power plant switched on, and fuel rods moved into position. Elsewhere ovens fired, and robot stokers prepared to shovel. On other landers payload bays opened, and robot mechanisms spidered out onto the surface and anchored themselves to the irregular planes of rock. Tunnelers bored in. Dust flew off into the space around the asteroid, and fell back down or escaped forever. Landers extended pipes and tubes into each other. The asteroid#8217;s rock was carbonaceous chrondrite, with a good percentage of water ice shot through it in veins and bubbles. Soon the linked collection of factories in the landers began to produce a variety of carbon-based materials, and some composites.

Heavy water, one part in every 6,000 of the water ice in the asteroid, was separated out. Deuterium was made from the heavy water. Parts were made from the carbon composites, and other parts, brought along in another payload, were brought together with the new ones in factories. New robots appeared, made mostly of Clarke itself. And so the number of machines grew, as computers on the landers directed the creation of an entire industrial complex.

After that the process was quite simple, for many years. The principal factory on New Clarke made a cable of carbon nanotube filaments. The nanotubes were made of carbon atoms linked in chains so that the bonds holding them together were as strong as any that humans could manufacture. The filaments were only a few score meters long, but were bundled in clusters with their ends overlapping, and then the bundles were bundled, until the cable was nine meters in diameter. The factories could create the filaments and bundle them at speeds that allowed them to extrude the cable at a rate of about four hundred meters an hour, ten kilometers a day, for hour after hour, day after day, year after year.

While this thin strand of bundled carbon spun out into space, robots on another facet of the asteroid were constructing a mass driver, an engine that would use the deuterium from the indigenous water to fire crushed rock away from the asteroid at speeds of 200 kilometers a second. Around the asteroid smaller engines and conventional rockets were also being constnicted and stocked with fuels, waiting/or the time when they would fire, and perform the work of attitude jets. Other factories constructed long wheeled vehicles capable of running back and forth on the growing cable, and as the cable continued to appear out of the planet, small rocket jets and other machinery were attached to it.

The mass driver fired. The asteroid began to move into a new orbit.

Years passed. The asteroid#8217;s new orbit intersected the orbit of Mars such that the asteroid came within ten thousand kilometers of Mars, and the collection of rockets on the asteroid fired in a way that allowed the gravity of Mars to capture it, in an orbit at first highly elliptical. The jets continued to fire off and on, regularizing the orbit. The cable continued to extrude. More years passed.

A little over a decade after the landers had first touched down, the cable was approximately thirty thousand kilometers long. The asteroid#8217;s mass was about eight billion tons, the cable#8217;s mass was about seven billion. The asteroid was in an elliptical orbit with a periapsis of around fifty thousand kilometers. But now all the rockets and mass drivers on both New Clarke and the cable itself began to fire, some continuously but most in spurts. One of the most powerful computers ever made sat in one of the payload bays, coordinating the data from sensors and determining what rockets should fire when. The cable, at this time pointing away from Mars, began to swing around toward it, as in the pivoting of some delicate part of a timepiece. The asteroid#8217;s orbit became smaller and more regular.

More rockets landed on New Clarkefor the first time since that first touchdown, and robots in them began the construction of a spaceport. The tip of the cable began to descend toward Mars. Here the calculus employed by the computer soared off into an almost metaphysical complexity, and the gravitational dance of asteroid and cable with the planet became ever more precise, moving to a music that was in a permanent ritard, so that as the great cable grew closer to its proper position, its movements became slower and slower. If anyone had been able to see the full extent of this spectacle, it might have seemed like some spectacular physical demonstration of Zeno#8217;s paradox, in which the racer gets closer to the finish line by halving distances #8230; But no one ever saw the full spectacle, for no witnesses had the senses necessary. Proportionally the cable was far thinner than a human hair #8212; if it had been reduced to a hair#8217;s diameter, it would still have been hundreds of kilometers long #8212; and so it was only visible for short portions of its entire length. Perhaps one might say that the computer guiding it in had the fullest sensation of it. For observers down on the surface of Mars, in the town of Sheffield, on the volcano Pavonis Mons (Peacock Mountain), the cable made its first appearance as a very small rocket, descending with a very thin leader line attached to it; something like a bright lure and a thin fishing line, being trolled by some gods in the next universe up. From this ocean-bottom perspective the cable itself followed its leader line down into the massive concrete bunker east of Sheffield with an aching slowness, until most humans simply stopped paying attention to the vertical black stroke in the upper atmosphere.

But the day came when the bottom of the cable, firing jets to hold its position in the gusty winds, dropped down into the hole in the roof of the concrete bunker, and settled into its collar. Now the cable below the areosynchronous point was being pulled down by Mars#8217;s gravity; the part above the areosynchronous point was trying to follow New Clarke in centrifugal flight away from the planet; and the carbon filaments of the cable held the tension, and the whole apparatus rotated at the same speed as the planet, standing above Pavonis Mons in an oscillating vibration that allowed it to dodge Deimos; all of it controlled still by the computer on New Clarke, and the long battery of rockets deployed on the carbon strand.

The elevator was back. Cars were lifted up one side of the cable from Pavonis, and other cars were let down from New Clarke, providing a counterweight so that the energy needed for both operations was greatly lessened. Spaceships made their approach to the New Clarke spaceport, and when they left they were given a slingshot departure. Mars#8217;s gravity well was therefore substantially mitigated, and all its human intercourse with Earth and the rest of the solar system made less expensive. It was as if an umbilical cord had been retied.

He was in the middleof a perfectly ordinary life when they drafted him and sent him to Mars.

The summons came in the form of a fax that appeared out of his phone, in the apartment Art Randolph had rented just the month before, after he and his wife had decided on a trial separation. The fax was brief: Dear Arthur Randolph: William Fort invites you#8217;to attend a private seminar. A plane will leave San Francisco airport at 9 A.M., February 22nd 2101.

Art stared at the paper in amazement. William Fort was the founder of Praxis, the transnational that had acquired Art#8217;s company some years before. Fort was very old, and now his position in the transnat was said to be some kind of semiretired emeritus thing. But he still held private seminars, which were notorious although there was very little hard information about them. It was . said that he invited people from all subsidiaries of the transnat; that they gathered in San Francisco, and were flown away by private jet to someplace secret. No one knew what went on there. People who attended were usually transferred afterward, and if not, they kept their mouths shut in a way that gave one pause. So it was a mystery.

Art was surprised to be invited, apprehensive but basically pleased. Before its acquisition he had been the cofounder and technical director of a small company called Dumpmines, which was in the business#8221; of digging up and processing old landfills, recovering the valuable materials that had been thrown away in a more wasteful age. It had been a surprise when Praxis had acquired them, a very pleasant surprise, as everyone in Dumpmines went from employment in a small firm to apprentice membership in one of the richest organizations in the world #8212; paid in its shares, voting on its policy, free to use all its resources. It was like being knighted.

Art certainly had been pleased, and so had his wife, although she had been elegiac as well. She herself had been hired by Mitsubishi#8217;s synthesis management, and the big transnationals, she said, were like separate worlds. With the two of them working for different ones they were inevitably going to drift apart, even more than they already had. Neither of them needed the other anymore to obtain longevity treatments, which transnats provided much more reliably than the government. And so they were like people on different ships, she said, sailing out of San Francisco Bay in different directions. Like ships, in fact, passing in the night.

It had seemed to Art that they might have been able to commute between ships, if his wife had not been so interested in one of the other passengers on hers, a vice-chairman of Mitsubishi in charge of East Pacific development. But Art had been quickly caught up in Praxis#8217;s arbitration program, traveling frequently to take classes or arbitrate in disputes between various small Praxis subsidiaries involved in resource recovery, and when he was in San Francisco, Sharon was very seldom at home. Their ships were moving out of hailing distance, she had said, and he had become too demoralized to contest the point, and had moved out soon afterward, on her suggestion. Kicked out, one could have said.

Now he rubbed a swarthy unshaven jaw, rereading the fax for the fourth time. He was a big man, powerfully built but with a tendency to slouch #8212; #8220;uncouth,#8221; his wife had called him, although his secretary at Dumpmines used the term #8220;bearlike,#8221; which he preferred. Indeed he had the somewhat clumsy and shambling appearance of a bear, also its surprising quickness and power. He had been a fullback at the University of Washington, a fullback slow of foot but decisive in direction, and very difficult to bring down Bear Man, they had called him. Tackle him at your peril.

He had studied engineering, and afterward worked in the oil fields of Iran and Georgia, devising a number of innovations for extracting oil from extremely marginal shale. He had gotten a master#8217;s degree from Tehran University while doing this work, and then had moved to California and joined a friend who was forming a company that made deep-sea diving equipment used in offshore oil drilling, an enterprise that was moving out into ever-deeper water as more accessible supplies were exhausted. Once again Art had invented a number of improvements in both diving gear and underwater drills, but a couple of years spent in compression chambers and on the continental shelf had been enough for him, and he had sold his shares to his partner and moved on again. In quick succession he had started a cold-environments habitat construction company, worked for a solar panel firm, and built rocket gantries. Each job had been fine, but as time passed he had found that what really interested him, was not the technical problems but the human, ones. He became more and more involved with project management, and then got into arbitration; he liked jumping into arguments and solving them to everyone#8217;s satisfaction. It was engineering of a different kind, more engrossing and fulfilling than the mechanical stuff, and more difficult. Several of the companies he worked for in those years were part of transnationals, and he got embroiled in interface arbitration not only between his companies and others in the transnats, but also in more distant disputes requiring some kind of third-party arbitration. Social engineering, he called it, and found it fascinating.

So when starting Dumpmines he had taken the technical directorship, and had done some good work on their SuperRathjes, the giant robot vehicles that did the extraction and sorting at the landfills; but more than ever before he involved himself in labor disputes and the like. This trend in his career had accelerated after the acquisition by Praxis. And on the days when work like that went well, he always went home knowing that he should have been a judge, or a diplomat. Yes #8212; at heart he was a diplomat.

Which made it embarrassing that he had not been able to negotiate a successful outcome to his own marriage. And no doubt the breakup was well known to Fort, or whoever had invited him to this seminar. It was even possible that they had bugged his old apartment, and heard the unhappy mess of his and Sharon#8217;s final months together, which wouldn#8217;t have been flattering to either of them. He cringed at the thought, still rubbing his rough jaw, and drifted toward the bathroom and turned on the portable water heater. The face in the mirror looked mildly stunned. Unshaven, fifty, separated, misemployed for most of his life, just beginning at his true calling #8212; he was not the kind of person he imagined got faxes from William Fort.

His wife or ex-wife-to-be called, and she was likewise incredulous. #8220;It must be a mistake,#8221; she said when Art told her about it. She had called about one of her camera lenses, now missing; she suspected that Art had taken it when he moved out. #8220;I#8217;ll look for it,#8221; Art said. He went over to the closet to look in his two suitcases, still packed. He knew the lens was not in them, but he rooted loudly through them both anyway. Sharon would know if he tried to fake it. While he searched she continued to talk over the phone, her voice echoing tinnily through the empty apartment. #8220;It just shows how weird that Fort is. You#8217;ll go to some Shangri-La and he#8217;ll be using Kleenex boxes for shoes and talking Japanese, and you#8217;ll be sorting his trash and learning to levitate and I#8217;ll never see you again. Did you find it?#8221;

#8220;No. It#8217;s not here.#8221; When they had separated they had divided their joint possessions: Sharon had taken their apartment, the entertainment center, the desktop array, the lectern, the cameras, the plants, the bed, and all the rest of the furniture; Art had taken the Teflon frying pan. Not one of his best arbitrations. But it meant he now had very few places to search for the lens.

Sharon could make a single sigh into a comprehensive accusation. #8220;They#8217;ll teach you Japanese, and we#8217;ll never see you again. What could William Fort want with you?#8221; #8220;Marriage counseling?#8221; Art said.

Many of the rumors about Fort#8217;s seminars turned out to be true, which Art found amazing. At San Francisco International he got on a big powerful private jet with six other men and women, and after takeoff the jet#8217;s windows, apparently double-polarized, went black, and the door to the cockpit was closed. Two of Art#8217;s fellow passengers played at orienteering, and after the jet made several gentle banks left and right, they agreed that they were headed in some direction between southwest and north. The seven of them shared information: they were all technical managers or arbitrators from the vast network of Praxis companies. They had flown in to San Francisco from all over the world. Some seemed excited to be invited to meet the transnational#8217;s reclusive founder; others were apprehensive.

Their flight lasted six hours, and the orienteers spent the descent plotting the outermost limit of their location, a circle that encompassed Juneau, Hawaii, Mexico City, and Detroit, although it could have been larger, as Art pointed out, if they were in one of the new air-to-space jets; perhaps half the Earth or more. When the jet landed and stopped, they were led through a miniature jetway into a big van with blackened windows, and a windowless barrier between them and the driver#8217;s seat. Their doors were locked from the outside.

They were driven for half an hour. Then the van stopped and they were let out by their driver, an elderly man wearing shorts and a T-shirt advertising Bali.

They blinked in the sunlight. They were not in Bali. They were in a small asphalt parking lot surrounded by eucalyptus trees, at the bottom of a narrow coastal valley. An ocean or very big lake lay to the west about a mile, just a small wedge of it in sight. A creek drained the valley, and ran into a lagoon behind a beach. The valley#8217;s side walls were covered with dry grass on the south side, cactus on the north; the ridges above were dry brown rock. #8220;Baja?#8221; one of the orienteers guessed. #8220;Ecuador? Australia?#8221;

#8220;San Luis Obispo?#8221; Art said.

Their driver led them on foot down a narrow road to a small compound, composed of seven two-story wooden buildings, nestled among seacoast pines at the bottom of the valley. Two buildings by the creek were residences, and after they dropped their bags in assigned rooms in these buildings, the driver led them to a dining room in another building, where half a dozen kitchen workers, all quite elderly, fed them a simple meal of salad and stew. After that they were taken back to the residences, and left on their own.

They gathered in a central chamber around a wood-burning stove. It was warm outside, and there was no fire in the stove.

#8220;Fort is a hundred and twelve,#8221; the orienteer named Sam said. #8220;And the treatments haven#8217;t worked on his brain.#8221;

#8220;They never do,#8221; said Max, the other orienteer.

They discussed Fort for a while. All of them had heard things, for William Fort was one of the great success stories in the history of medicine, their century#8217;s Pasteur: the man who beat cancer, as the tabloids inaccurately put it. The man who beat the common cold. He had founded Praxis at age twenty-four, to market several breakthrough innovations in antivirals, and he had been a multi-billionaire by the time he was twenty-seven. After that he had occupied his time by expanding Praxis into one of the world#8217;s biggest transnational. Eighty continuous years of metastasizing, as Sam put it. While mutating personally into a kind of ultra-Howard Hughes, or so it was said, growing more and more powerful, until like a black hole he had disappeared completely inside the event horizon of his own power. #8220;I just hope it doesn#8217;t get too weird,#8221; Max said.

The others attendants #8212; Sally, Amy, Elizabeth, and George #8212; were more optimistic. But all of them were apprehensive at their peculiar welcome, or lack of one, and when no one came to visit them through the rest of that evening, they retired to their rooms looking concerned.

Art slept well as always, and at dawn he woke to the low hoot of an owl. The creek burbled below his window. It was a gray dawn, the air filled with the fog that nourished the sea pines. A locking sound came from somewhere in the compound.

He dressed and went out. Everything was soaking wet. Down on narrow flat terraces below the buildings were rows of lettuce, and rows of apple trees so pruned and tied to frameworks that they were no more than fan-shaped bushes.

Colors were seeping into things when Art came to the bottom of the little farm, over the lagoon. There a lawn lay spread like a carpet under a big old oak tree. Art walked over to the tree, feeling drawn to it. He touched its rough, fissured bark. Then he heard voices; coming up a path by the lagoon were a line of people, wearing black wetsuits and carrying surfboards, or long folded birdsuits. As they passed he recognized the faces of the previous night#8217;s kitchen crew, and also their driver. The driver waved and continued up the path. Art walked down it to the lagoon. The low sound of waves mumbled through the salty air, and birds swam in the reeds.

After a while Art went back up the trail, and in the compound#8217;s dining room he found the elderly workers back in the kitchen, flipping pancakes. After Art and the rest of the guests had eaten, yesterday#8217;s driver led them upstairs to a large meeting room. They sat on couches arranged in a square. Big picture windows in all four walls let in a lot of the morning#8217;s gray light. The driver sat on a chair between two couches. #8220;I#8217;m William Fort,#8221; he said. #8220;I#8217;m glad you#8217;re all here.#8221;

He was, on closer inspection, a strange-looking old man; his face was lined as if by a hundred years of anxiety, but the expression it currently displayed was serene and detached. A chimp, Art thought, with a past in lab experimentation, now studying Zen. Or simply a very old surfer or hang-glider, weathered, bald, round-faced, snub-nosed. Now taking them in one by one. Sam and Max, who had ignored him as driver and cook, were looking uncomfortable, but he didn#8217;t seem to notice. #8220;One index,#8221; he said, #8220;for measuring how full the world is of humans and their activities, is the percent appropriation of the net product of land-based photosynthesis.#8221;

Sam and Max nodded as if this were the usual way to start a meeting.

#8220;Can I take notes?#8221; Art asked.

#8220;Please,#8221; Fort said. He gestured at the coffee table in the middle of the square of couches, which was covered with papers and lecterns. #8220;I want to play some games later, so there#8217;s lecterns and workpads, whatever you like.#8221;

Most of them had brought their own lecterns, and there was a short silent scramble as they got them out and running. While they were at it Fort stood up and began walking in a circle behind their couches, making a revolution every few sentences.

#8220;We now use about eighty percent of the net primary product of land-based photosynthesis,#8221; he said. #8220;One hundred percent is probably impossible to reach, and our long-range carrying capacity has been estimated to be thirty percent, so we are massively overshot, as they say. We have been liquidating our natural capital as if it were disposable income, and are nearing depletion of certain capital stocks, like oil, wood, soil, metals, fresh water, fish, and animals. This makes continued economic expansion difficult.#8221;

Difficult! Art wrote. Continued?

#8220;We have to continue,#8221; Fort said, with a piercing glance at Art, who unobtrusively sheltered his lectern with his arm. #8220;Continuous expansion is a fundamental tenet of economics. Therefore one of the fundamentals of the universe itself. Because everything is economics. Physics is cosmic economics, biology is cellular economics, the humanities are social economics, psychology is mental economics, and so on.#8221;

His listeners nodded unhappily.

#8220;So everything is expanding. But it can#8217;t happen in contradiction to the law of conservation of matter-energy. No matter how efficient your throughput is, you can#8217;t get an output larger than the input.#8221;

Art wrote on his note page, Output larger than input #8212; everything economics #8212; natural capital #8212; Massively Overshot.

#8220;In response to this situation, a group here in Praxis has been working on what we call full-world economics.#8221;

#8220;Shouldn#8217;t that be overfull-world?#8221; Art asked.

Fort didn#8217;t appear to hear him. #8220;Now as Daly said, man-made capital and natural capital are not substitutable. This is obvious, but since most economists still say they are substitutable, it has to be insisted on. Put simply, you can#8217;t substitute more sawmills for fewer forests. If you#8217;re building a house you can juggle the number of power saws and carpenters, which means they#8217;re substitutable, but you can#8217;t build it with half the amount of lumber, no matter how many saws or carpenters you have. Try it and you have a house of air. And that#8217;s where we live now.#8221;

Art shook his head and looked down at his lectern page, which he had filled again. Resources and capital nonsubstitutable #8212; power saws/carpenters #8212; house of air.

#8220;Excuse me?#8221; Sam said. #8220;-Did you say natural capital?#8221;

Fort jerked, turned around to look at Sam. #8220;Yes?#8221;

#8220;I thought capital was by definition man-made. The produced means of production, we were taught to define it.#8221;

#8220;Yes. But in a capitalist world, the word capital has taken on more and more uses. People talk about human capital, for instance, which is what labor accumulates through education and work experience. Human capital differs from the classic kind in that you can#8217;t inherit it, and it can only be rented, not bought or sold.#8221;

#8220;Unless you count slavery,#8221; Art said.

Fort#8217;s forehead wrinkled. #8220;This concept of natural capital actually resembles the traditional definition more than human capital. It can be owned and bequeathed, and divided into renewable and nonrenewable, marketed and nonmarketed.#8221;

#8220;But if everything is capital of one sort or another,#8221; Amy said, #8220;you can see why people would think that one kind was substi-tutable for another kind. If you improve your man-made capital to use less natural capital, isn#8217;t that a substitution?#8221;

Fort shook his head. #8220;That#8217;s efficiency. .Capital is a quantity of input, and efficiency is a ratio of output to input. No matter how efficient capital is, it can#8217;t make something out of nothing.#8221;

#8220;New energy sources #8230;#8221; Max suggested.

#8220;But we can#8217;t make soil out of electricity. Fusion power and self-replicating machinery have given us enormous amounts of power, but we have to have basic stocks to apply that power to. And that#8217;s where we run into a limit for which there are no substitutions possible.#8221;

Fort stared at them all, still displaying that primate calm that Art had noted at the beginning. Art glanced at his lectern screen. Natural capital #8212; human capital #8212; traditional capital #8212; energy vs. matter #8212; electric soil #8212; no substitutes please #8212; He grimaced and clicked to a new page.

Fort said, #8220;Unfortunately, most economists are still working within the empty world model of economics.#8221;

#8220;The full-world model seems obvious,#8221; Sally said. #8220;It#8217;s just common sense. Why would any economist ignore it?#8221;

Fort shrugged, made another silent circumnavigation of the room. Art#8217;s neck was getting tired.

#8220;We understand the world through paradigms. The change from empty-world economics to full-world economics is a major paradigm shift. Max Planck once said that a new paradigm takes over not when it convinces its opponents, but when its opponents eventually die.#8221;

#8220;And now they aren#8217;t dying,#8221; Art said.

Fort nodded. #8220;The treatments are keeping people around. And a lot of them have tenure.#8221;

Sally looked disgusted. #8220;Then they#8217;ll have to learn to change their minds, won#8217;t they.#8221;

Fort stared at her. #8220;We#8217;ll try that right now. In theory at least. I want you to invent full-world economic strategies. It#8217;s a game I play. If you plug your lecterns into the table, I can give you the starting data.#8221;

They all leaned forward and plugged into the table.

*     *       *

The first game Fort wanted to play involved estimating maximum sustainable human populations. #8220;Doesn#8217;t that depend on assumptions about lifestyle?#8221; Sam asked.

#8220;We#8217;ll make a whole range of assumptions.#8221;

He wasn#8217;t kidding. They went from scenarios in which Earth#8217;s every acre of arable land was farmed with maximum efficiency, to scenarios involving a return to hunting and gathering; from universal conspicuous consumption, to universal subsistence diets. Their lecterns set the initial conditions and then they tapped away, looking bored or nervous or impatient or absorbed, using formulas provided by the table, or else supplying some of their own.

It occupied them until lunch, and then all afternoon. Art enjoyed games, and he and Amy always finished well ahead of the others. Their results for a maximum sustainable population ranged from a hundred million (the #8220;immortal tiger#8221; model, as Fort called it) to thirty billion (the #8220;ant farm#8221; model).

#8220;That#8217;s a big range,#8221; Sam noted.

Fort nodded, and eyed them patiently.

#8220;But if you look only at models with the most realistic conditions,#8221; Art said, #8220;you usually get between three and eight billion.#8221;

#8220;And the current population is about twelve billion,#8221; Fort said. #8220;So, say we#8217;re overshot. Now what do we do about that? We#8217;ve got companies to run, after all. Business isn#8217;t going to stop because there#8217;s too many people. Full-wo rid economics isn#8217;t the end of economics, it#8217;s just the end of business as usual. I want Praxis to be ahead of the curve on this. So. It#8217;s low tide, and I#8217;m going back out. You#8217;re welcome to join me. Tomorrow we#8217;ll play a game called Overfull.#8221;

With that he left the room, and they were on their own. They went back to their rooms, and then, as it was close to dinnertime, to the dining hall. Fort was not there, but several of his elderly associates from the night before were; and joining them tonight was a crowd of young men and women, all of them lean, bright-faced, healthy-looking. They looked like a track club or a swim team, and more than half were women. Sam#8217;s and Max#8217;s eyebrows shot up and down in a simple Morse code, spelling #8220;Ah ha! Ah ha!#8221; The young men and women ignored that and served them dinner, then returned to the kitchen. Art ate quickly, wondering if Sam and Max were correct in their suppositions. Then he took his plate into the kitchen and started to help at the dishwasher, and said to one of the young women, #8220;What brings you here?#8221;

#8220;It#8217;s a kind of scholarship program,#8221; she said. Her name was Joyce. #8220;We#8217;re all apprentices who joined Praxis last year, and we were selected to come here for classes.#8221;

#8220;Were you by chance working on full-world economics today?#8221;

#8220;No, volleyball.#8221;

Art went back outside, wishing he had gotten selected to their program rather than his. He wondered if there was some big hot-tub facility, down there overlooking the ocean. It did not seem impossible; the ocean here was cool, and if everything was economics, it could be seen as an investment. Maintaining the human infrastructure, so to speak.

Back in the residence, his fellow guests were talking the day over. #8220;I hate this kind of stuff,#8221; said Sam.

#8220;We#8217;re stuck with it,#8221; Max said gloomily. #8220;It#8217;s join a cult or lose your job.#8221;

The others were not so pessimistic. #8220;Maybe he#8217;s just lonely,#8221; Amy suggested.

Sam and Max rolled their eyes and glanced toward the kitchen.

#8220;Maybe he always wanted to be a teacher,#8221; Sally said.

#8220;Maybe he wants to keep Praxis growing ten percent per year,#8221; George said, #8220;full world or not.#8221;

Sam and Max nodded at this, and Elizabeth looked annoyed. #8220;Maybe he wants to save the world!#8221; she said.

#8220;Right,#8221; Sam said, and Max and George snickered.

#8220;Maybe he#8217;s got this room bugged,#8221; Art said, which cut short the conversation like a guillotine.

The days that followed were much like the first one. They sat in the conference room, and Fort circled them and talked through the mornings, sometimes coherently, sometimes not. One morning he spent three hours talking about feudalism #8212; how it was the clearest political expression of primate dominance dynamics, how it had never really gone away, how transnational capitalism was feudalism writ large, how the aristocracy of the world had to figure out how to subsume capitalist growth within the steady-state stability of the feudal model. Another morning he talked about a caloric theory of value called eco-economics, apparently first worked out by early settlers on Mars; Sam and Max rolled their eyes at that news, while Fort droned on about Taneev and Tokareva equations, scribbling illegibly on a drawing board in the corner.

But this pattern didn#8217;t last, because a few days after their arrival a big swell came in from the south, and Fort canceled their meetings and spent all his time surfing or skimming over the, waves in a birdsuit, which was a light broad-winged bodysuit, a flexible fly-by-wire hang glider that translated the flyer#8217;s muscle movements into the proper semi-rigid configurations for successful flight. Most of the young scholarship winners joined him in the air, swooping around like Icaruses, and then dropping in and planing swiftly over the cushions of air pushed up by every breaking wave, air surfing just like the pelicans that had invented the sport.

Art went out and thrashed around on a body board, enjoying the water, which was chill, but not so much as to absolutely require a wetsuit. He hung out near the break that Joyce surfed, and chatted with her between sets, and found out that the other ancient kitchen workers were good friends of Fort#8217;s, veterans of the first years of Praxis#8217;s rise to prominence. The young scholars referred to them as the Eighteen Immortals. Some of the Eighteen were based at the camp, while others dropped by for a kind of ongoing reunion, conferring about problems, advising the current Praxis leadership on policy, running seminars and classes, and playing in the waves. Those who didn#8217;t care for the water worked in the gardens.

Art inspected the gardeners closely as he hiked back up to the compound. They worked in something resembling slow motion, talking to each other all the while. Currently the main task appeared to be harvesting the tortured apple bushes.

The south swell subsided, and Fort reconvened Art#8217;s group. One day the topic was Full-World Business Opportunities, and Art began to see why he and his six fellows might have been chosen to attend: Amy and George worked in contraception, Sam and Max in industrial design, Sally and Elizabeth in agricultural technology, and he himself in resource recovery. They all worked in full-world businesses already, and in the afternoon#8217;s games they proved fairly good at designing new ones.

Another day Fort proposed a game in which they solved the full-world problem by returning to an empty world. They were to suppose the release of a plague vector that would kill- everyone in the world who had not had the gerontological treatment. What would the pros and cons of such an action be?

The group stared at their lecterns, nonplussed. Elizabeth declared that she wouldn#8217;t play a game based on such a monstrous idea.

#8220;It is a monstrous idea,#8221; Fort agreed. #8220;But that doesn#8217;t make it impossible. I hear things, you see. Conversations at certain levels. Among the leadership of the big transnationals, for instance, there are discussions. Arguments. You hear all kinds of ideas put out quite seriously, including some like this one. Everyone deplores them, and the subject changes. But no one claims that they are technically impossible. And some seem to think that they would solve certain problems that otherwise are unsolvable.#8221;

The group considered this thought unhappily. Art suggested that agricultural workers would be in short supply.

Fort was looking out at the ocean. #8220;That#8217;s the fundamental problem with a collapse,#8221; he said thoughtfully. #8220;Once you start one, it#8217;s hard to pick a point at which one can confidently say it will stop. Let#8217;s go on.#8221;

And they did, rather subdued. They played Population Reduction, and given the alternative they had just contemplated, went at it with a certain intensity. Each of them took a turn being Emperor of the World, as Fort put it, and outlined his or her plan in some detail.

When it was Art#8217;s turn, he said, #8220;I would give everyone alive a birthright which entitled them to parent three-quarters of a child.#8221;

Everyone laughed, including Fort. But Art persevered. He explained that every pair of parents would thus have the right to bear a child and a half; after having one, they could either sell the right to the other half, or arrange to buy a half from some other couple and go on to have a second child. Prices for half children would fluctuate in classic supply/demand fashion. Social consequences would be positive; people who wanted extra children would have to sacrifice for them, and those who didn#8217;t would have a source of income to help support the one they had. When populations dropped far enough, the World Emperor might consider changing the birthright to one child per person, which would be close to a demographic steady state; but given the longevity treatment, the three-quarters limit might have to be in effect for a long time.

When Art was done outlining the proposal he looked up from the notes on his lectern. Everyone was staring at him.

#8220;Three quarters of a child,#8221; Fort repeated with a grin, and everyone laughed again. #8220;I like that.#8221; The laughter stopped. #8220;It would finally establish a monetary value for a human life, on the open market. So far the work done in that area has been sloppy at best. Lifetime incomes and expenditures and the like.#8221; He sighed and shook his head. #8220;The truth is, economists cook most of the numbers in the back room. Value isn#8217;t really an economic calculation. No, I like this. Let#8217;s see if we can estimate how much the price of a half child would be. I#8217;m sure there would be speculation, middlemen, a whole market apparatus.#8221;

So they played the three-quarters game for the rest of the afternoon, getting right down to the commodities market and the plots for soap operas. When they finished, Fort invited them to a barbecue on the beach.

They went back to their rooms and put on windbreakers, and hiked down the valley path into the glare of the sunset. On the beach under a dune was a big bonfire, being tended by some of the young scholars. As they approached and sat on blankets around the fire, a dozen or so of the Eighteen Immortals landed out of the air, running across the sand and bringing their wings slowly down, then unzipping from their suits, and pulling wet hair out of their eyes, and talking among themselves about the wind. They helped each other out of the long wings, and stood in their bathing suits goose-pimpled and shivering: centenarian flyers with wiry arms outstretched to the fire, the women just as muscular as the men, their faces just as lined by a million years of squinting into the sun and laughing around the fire. Art watched the way Fort joked with his old friends, the easy way they toweled each other down. Secret lives of the rich and famous! They ate hot dogs and drank beer. The flyers went behind a dune and returned dressed in pants and sweatshirts, happy to stand by the fire a bit longer, combing out each other#8217;s wet hair. It was a dusky twilight, and the evening onshore breeze was salty and cold. The big mass of orange flame danced in the wind, and light and shadow flickered over Fort#8217;s simian visage. As Sam had said earlier, he didn#8217;t look a day over eighty.

Now he sat among his seven guests, who were sticking together, and stared into the coals and started talking again. The people on the other side of the fire continued in their conversations, but Fort#8217;s guests leaned closer to hear him over the wind and waves and crackling wood, looking a bit lost without their lecterns in their laps.

#8220;You can#8217;t make people do things,#8221; Fort said. #8220;It#8217;s a matter of changing ourselves. Then people can see, and choose. In ecology they have what they call the founder principle. An island population is started by a small number of settlers, so it has only a small fraction of the genes of the parent population. That#8217;s the first step toward speciation. Now I think we need a new species, economically speaking of course. And Praxis itself is the island. The way we structure it is a kind of engineering of the genes we came to it with. We have no obligation to abide by the rules as they stand now. We can make a new species. Not feudal. We#8217;ve got the collective ownership and decision-making, the policy of constructive action. We#8217;re working toward a corporate state similar to the civic state they#8217;ve made in Bologna. That#8217;s a kind of democratic communist island, outperforming the capitalism around it, and constructing a better way to live. Do you think that kind of democracy is possible? We#8217;ll have to try playing at that one of these afternoons.#8221;

#8220;Whatever you say,#8221; Sam remarked, which got him a sharp glance from Fort.

The following morning it was sunny and warm, and Fort decided the weather was too good to stay indoors. So they returned to the beach and set up under a big awning near the firepit, among coolers and hammocks strung between the awning poles. The ocean was a deep bright blue, the waves small but crisp, and often occupied by wetsuited surfers. Fort sat in one of the hammocks and lectured on selfishness and altruism, taking his examples from economics, sociobiology, and bioethics. He concluded that strictly speaking, there was no such thing as altruism. It was only selfishness taking the long view, acknowledging the real costs of behavior and making sure to pay them in order not to run up any long-term debts. A very sound economic practice, in fact, if properly directed and applied. As he tried to prove by means of the selfish-altruism games they then played, like Prisoner#8217;s Dilemma, or Tragedy of the Commons.

The next day they met in the surf camp again, and after a meandering talk on voluntary simplicity, they played a game Fort called Marcus Aurelius. Art enjoyed this game as he did all the others, and he played it well. But each day his lectern notes were getting shorter; for this day they read, in their entirety, Consumption #8212; appetite #8212; artificial needs #8212; real needs #8212; real costs #8212; straw beds! Env. Impact = population X appetite X efficiency #8212; in tropics refrigerators not a luxury #8212; community refrigerators #8212; coldhouses #8212; Sir Thomas More.

That evening the conferees ate alone, and their discussion over dinner was tired. #8220;I suppose this place is a kind of voluntary simplicity,#8221; Art remarked.

#8220;Would that include the young scholars?#8221; Max asked. #8220;I don#8217;t see the Immortals doing very much with them.#8221; #8220;They just like to look,#8221; Sam said. #8220;When you#8217;re that old #8230;#8221; #8220;I wonder how long he plans to keep us here,#8221; Max said. #8220;We#8217;ve only been here a week and it#8217;s already boring.#8221; #8220;I kind of like it,#8221; Elizabeth said. #8220;It#8217;s relaxing.#8221; Art found that he agreed with her. He was getting up early; one of the scholars marked every dawn by striking a wooden block with a big wooden mallet, in a descending interval that drew Art out of sleep every time: tock#8230;#8230; tock#8230;#8230; tock#8230; tock#8230; tock.. tock. tock tock toc toc toc-toc-to-to-to-t-t-ttttttt. After that Art went out into gray wet mornings, full of birdcalls. The sound of the waves was always there, as if invisible shells were held to his ears. When he walked the trail through the farm he always found some of the Eighteen Immortals around, chatting as they worked with hoes or pruning shears, or sat under the big oak tree looking out at the ocean. Fort was often among them. Art could hike through the hour before breakfast with the knowledge that he would spend the rest of the day in a warm room or on a warm beach, talking and playing games. Was that simple? He wasn#8217;t sure. It was definitely relaxing; he had never spent time like it.

But of course there was more to it than that. It was, as Sam and Max kept reminding them, a kind of test. They were being judged. The old man was watching them, and maybe the Eighteen Immortals as well, and the young scholars too, the #8220;apprentices#8221; who began to look to Art like serious powers, young hotshots who ran a lot of the day-to-day operations of the compound, and perhaps of Praxis too, even at its highest levels #8212; in consultation with the Eighteen, or perhaps not. After listening to Fort ramble, he could see how one might be inclined to bypass him when it came to practical matters. And the conversations around the dishwasher sometimes had the tone of siblings squabbling over how to deal with incapacitated parents…

Anyway, a test: one night Art went over to the kitchen to get a glass of milk before bed, and passed a small room off the dining hall, where a number of people, old and young, were watching a videotape of the morning#8217;s session with Fort. Art went back to his room, deep in thought.

The next morning in the conference room Fort circled the room in his usual way. #8220;The new opportunities for growth are no longer in growth.#8221;

Sam and Max glanced at each other ever so briefly.

#8220;That#8217;s what all this full-world thinking comes down to. So we#8217;ve got to identify the new nongrowth growth markets, and get into them. Now recall that natural capital can be divided into marketable and nonmarketable. Nonmarketable natural capital is the substrate from which all marketable capital arises. Given its scarcity and the benefits that it provides, it would make sense according to standard supply/demand theory to set its price as infinite. I#8217;m interested in anything that has a theoretically infinite price. It#8217;s an obvious investment. Essentially it#8217;s infrastructure investment, but at the most basic biophysical level. Infra-infrastructure, so to speak, or bioinfrastructure. And that#8217;s what I want Praxis to start doing. We obtain and rebuild whatever bioinfrastructure has been depleted by liquidation. It#8217;s long-term investment, but the yields will be fantastic.#8221;

#8220;Isn#8217;t most bioinfrastructure publicly owned?#8221; Art asked.

#8220;Yes. Which means close cooperation with the governments involved. Praxis#8217;s gross annual product is much larger than most countries#8217;. What we need to do is find countries with small GNPs and bad CFIs.#8221;

#8220;CFI?#8221; Art said.

#8220;Country Future Index. It#8217;s an alternative to the GNP measurement, taking into account debt, political stability, environmental health and the like. A useful cross-check on the GNP, and it helps tag countries that could use our help. We identify those, go to them and offer them a massive capital investment, plus political advice, security, whatever they need. In return we take custody of their bioinfrastructure. We also have access to their labor. It#8217;s an obvious partnership. I think it will be the coming thing.#8221;

#8220;How do we fit in?#8221; Sam asked, gesturing at the group.

Fort looked at them one by one. #8220;I#8217;m going to give each of you a different assignment. I#8217;ll want you to keep them confidential. You#8217;ll be leaving here separately in any case, and going different places. You#8217;ll all be doing diplomatic work as a Praxis liaison, as well as specific jobs involved with bioinfrastructure investment. I#8217;ll give you the details in private. Now let#8217;s take an early lunch, and afterward I#8217;ll meet with you one at a time.#8221; Diplomatic work! Art wrote in his lectern.

He spent the afternoon wandering around the gardens, looking at the espaliered apple bushes. Apparently he was not early in the list of personal appointments with Fort. He shrugged at that. It was a cloudy day, and the flowers in the garden were wet and vibrant. It would be tough to move back to his studio under the freeway in San Jose. He wondered what Sharon was doing, whether she ever thought of him. Sailing with her vice-chairman, no doubt.

It was nearly sunset, and he was about to go back to his room and get ready for dinner when Fort appeared on the central path. #8220;Ah, there you are,#8221; he said. #8220;Let#8217;s go down to the oak.#8221;

They sat by the big tree#8217;s trunk. The sun was cutting under the low clouds, and everything was turning the color of the roses. #8220;You live in a beautiful place,#8221; Art said.

Fort didn#8217;t appear to hear him. He was looking up at the un-derlit clouds billowing overhead.

After a few minutes of this contemplation he said, #8220;We want you to acquire Mars.#8221;

#8220;Acquire Mars,#8221; Art repeated.

#8220;Yes. In the sense that I spoke about this morning. These national-transnational partnerships are the coming thing, there#8217;s no doubt about it. The old flag-of-convenience relationships were suggestive, but they need to be taken further, so that we have more control over our investment. We did that with Sri Lanka, and we#8217;ve had so much success in our deal there that the other big transnats are all imitating us, actively recruiting countries in trouble.#8221;

#8220;But Mars isn#8217;t a country.#8221;

#8220;No. But it is in trouble. When the first elevator crashed, its economy was shattered. Now the new elevator is in place, and things are ready to happen. I want Praxis to be ahead of the curve. Of course the other big investors are all still there too, jockeying for position, and that will only intensify now that the new elevator is up.#8221;

#8220;Who runs the elevator?#8221;

#8220;A consortium led by Subarashii.#8221;

#8220;Isn#8217;t that a problem?#8221;

#8220;Well, it gives them an edge. But they don#8217;t understand Mars. They think it#8217;s just a new source of metals. They don#8217;t see the possibilities.#8221;

#8220;The possibilities for…#8221;

#8220;For development! Mars isn#8217;t just an empty world, Randolph #8212; in economic terms, it#8217;s nearly a nonexistent world. Its bioinfras-tructure has to be constructed, you see. I mean one could just extract the metals and move on, which is what Subarashii and the others seem to have in mind. But that#8217;s treating it like nothing more than a big asteroid. Which is stupid, because its value as a base of operations, as a planet so to speak, far surpasses the value of its metals. All its metals together total about twenty trillion dollars, but the value of a terraformed Mars is more in the neighborhood of two hundred trillion dollars. That#8217;s about one third of the current Gross World Value, and even that doesn#8217;t make proper assessment of its scarcity value, if you ask me. No, Mars is bioinfrastructure investment, just like I was talking about. Exactly the kind of thing Praxis is looking for.#8221;

#8220;But acquisition #8230;#8221; Art said. #8220;I mean, what are we talking about?#8221;

#8220;Not what. Who.#8221;

#8220;Who?#8221;

#8220;The underground.#8221;

#8220;The underground!#8221;

Fort gave him time to think it over. Television, the tabloids, and the nets were full of tales of,the survivors of 2061, living in underground shelters in the wild southern hemisphere, led by John Boone and Hiroko Ai, tunneling everywhere, in contact with aliens, and dead celebrities, and current world leaders#8230; Art stared at Fort, a bona fide current world leader, shocked by the sudden notion that these Pellucidarian fantasies might have some truth to them. #8220;Does it really exist?#8221;

Fort nodded. #8220;It does. I#8217;m not in full contact with it, you understand, and I don#8217;t know how extensive it is. But I#8217;m sure that some of the First Hundred are still alive. You know the Taneev-Tokareva theories I talked about when you first arrived? Well, those two, and Ursula Kohl, and that whole biomedical team, they all lived in the Acheron Fin, north of Olympus Mons. During the war the facility was destroyed. But there were no bodies at the site. So about six years ago I had a Praxis team go in and rebuild the facility. When it was done we named it the Acheron Institute, and we left it empty. Everything is on-line and ready to go, but nothing is happening there, except for a small annual conference on their eco-economics. And last year, when the conference was over, one of the cleanup crew found a few pages in a fax tray. Comments on one of the papers presented. No signature, no source. But there was some work there that I#8217;m positive was written by Taneev or Tokareva, or someone very familiar with their work. And I think it was a little hello.#8221;

A very little hello, Art thought. But Fort seemed to read his mind: #8220;I#8217;ve just gotten an even bigger hello. I don#8217;t know who it is. They#8217;re being very cautious. But they#8217;re out there.#8221;

Art swallowed. It was big news, if true. #8220;And so you want me to #8230;#8221;

#8220;I want you to go to Mars. We have a project there that will be your cover story, salvaging a section of the fallen elevator cable. But while you#8217;re doing that, I#8217;ll be making arrangements to get you together with this person who has contacted me. You won#8217;t have to initiate anything. They#8217;ll make the move, and take you in: But look. In the beginning, I don#8217;t want you to let them know exactly what you#8217;re trying to do. I want you to go to work on them. Find out who they are, and how extensive their operation is, and what they want. And how we might deal with them.#8221;

#8220;So I#8217;ll be a kind of#8212;#8221;

#8220;A kind of diplomat.#8221;

#8220;A kind of spy, I was going to say.#8221;

Fort shrugged. #8220;It depends on who you#8217;-re with. This project has to remain a secret. I deal with a lot of the other transnat leaders, and they#8217;re scared people. Perceived threats to the current order often get attacked quite brutally. And some of them already think Praxis is a threat. So for the time being there is a hidden arm to Praxis, and this Mars investigation has to be part of that. So if you join, you join the hidden Praxis. Think you can do it?#8221;

#8220;I don#8217;t know.#8221;

Fort laughed. #8220;That#8217;s why I chose you for this mission, Randolph. You seem simple.#8221;

I am simple, Art almost said, and bit his tongue. Instead he said, #8220;Why me?#8221;

Fort regarded him. #8220;When we acquire a new company, we review its personnel. I read your record. I thought you might have the makings of a diplomat.#8221;

#8220;Or a spy.#8221;

#8220;They are often different aspects of the same job.#8221;

Art frowned. #8220;Did you bug my apartment? My old apartment?#8221;

#8220;No.#8221; Fort laughed again. #8220;We don#8217;t do that. People#8217;s records are enough.#8221;

Art recalled the late-night viewing of one of their sessions.

#8220;That and a session down here,#8221; Fort added. #8220;To get to know you.#8221;

Art considered it. None of the Eighteen wanted this job. Nor the scholars, perhaps. Of course it was off to Mars, and then into some invisible world no one knew anything about, maybe for good. Some people might not find it attractive. But for someone at loose ends, maybe looking for new employment, maybe with a potential for diplomacy#8230;

So all this had indeed proved to be a kind of interview process. For a job he hadn#8217;t even known existed. Mars Acquirer. Mars Acquisition Chief. Mars Mole. A Spy in the House of Ares. Ambassador to the Mars Underground. Ambassador to Mars. My oh my, he thought.

#8220;So what do you say?#8221;

#8220;I#8217;ll do it,#8221; Art said.

William Fort didn#8217;t fool around. The moment Art agreed to take the Mars assignment, his life speeded up like a video on fast forward. That night he was back in the sealed van, and then in the sealed jet, all alone this time, and when he staggered up the jetway it was dawn in San Francisco.

He went to the Dumpmines office, and made the round of friends and acquaintances there. Yes, he said again and again, I#8217;ve taken a job on Mars. Salvaging a bit of the old elevator cable. Only temporary. The pay is good. I#8217;ll be back.

That afternoon he went home and packed. It took ten minutes. Then he stood groggily in the empty apartment. There on the stove-top was the frying pan, the only sign of his former life. He took the frying pan over to his suitcases, thinking he could fit it in and take it with him. He stopped over the cases, full and shut. He went back and sat down on the single chair, the frypan hanging from his hand.

After a while he called Sharon, hoping partly to get her answering machine, but she was home. #8220;I#8217;m going to Mars,#8221; he croaked. She wouldn#8217;t believe it. When she believed it she got angry. It was desertion pure and simple, he was running out on her. But you already threw me out, Art tried to say, but she had hung up. He left the frying pan on the table, lugged his suitcases down to the sidewalk. Across the street a public hospital that did the longevity treatment was surrounded by its usual crowd, people whose turn at the treatment was supposedly near, camping out in the parking lot to make sure nothing went awry. The treatments were guaranteed to all U.S. citizens by law, but the waiting lists for the public facilities were so long that it was a question whether one would survive to reach one#8217;s turn. Art shook his head at the sight, and flagged down a pedicab.

He spent his last week on Earth in a motel in Cape Canaveral. It was a lugubrious farewell, as Canaveral was restricted territory, occupied chiefly by military police, and service personnel who had extremely bad attitudes toward the #8220;late lamented,#8221; as they called those waiting for departure. The daily extravaganza of takeoff only left everyone either apprehensive or resentful, and in all cases rather deaf. People went around in the afternoons with ears ringing, repeating, What? What? What? To counteract the problem most of the locals had earplugs; they would be dropping plates on one#8217;s restaurant table while talking to people in the kitchen, and suddenly they#8217;d glance at the clock and take earplugs out of their pocket and stuff them in their ears, and boom, off would go another Novy Energia booster with two shuttles strapped to it, causing the whole world to quake like jelly. The late lamented would rush out into the streets with hands over their ears to get another preview of their fate, staring up stricken at the biblical pillar of smoke and the pinpoint of fire arching over the Atlantic. The locals would stand in place chewing gum, waiting for the time-out to be over. The only time they showed any interest was one morning when the tides were high and news came that a group of party-crashers had swum up to the fence surrounding the town and cut their way inside, where security had chased them to the area of the day#8217;s launch; it was said some of them had been incinerated by takeoff, and this was enough to get some of the locals out to watch, as if the pillar of smoke and fire would look somehow different.

Then one Sunday morning it was Art#8217;s turn. He woke and dressed in the ill-fitting jumper provided, feeling as if he were dreaming. He got in the van with another man looking just as stunned as he felt, and they were driven to the launching compound and identified by retina, fingerprint, voice, and visual appearance; and then, without ever really having managed to think about what it all meant, he was led into an elevator and down a short tunnel into a tiny room where there were eight chairs somewhat like dentist#8217;s chairs, all of them occupied by round-eyed people, and then he was seated and strapped in and the door was shut and there was a vibrant roar under him and he was squished, and then he weighed nothing at all. He was in orbit.

After a while the pilot unbuckled and the passengers did too, and they went to the two little windows to look out. Black space, blue world, just like the pictures, but with the startling high resolution of reality. Art stared down at West Africa and a great wave of nausea rolled through every cell of him.

He was only just getting the slightest touch of appetite back, after a timeless interval of space sickness that apparently in the real world had clocked in at three days, when one of the continuous shuttles came bombing by, after swinging around Venus and aero-braking into an Earth-Luna orbit just slow enough to allow the little ferries to catch up to it. Sometime during his space sickness Art and the other passengers had transferred into one of these ferries, and when the time was right it blasted off in pursuit of the continuous shuttle. Its acceleration was even harder than the take-off from Canaveral, and when it ended Art was reeling, dizzy, and nauseated again. More weightlessness would have killed him; he groaned at the very thought; but happily there was a ring in the continuous shuttle that rotated at a speed that gave some rooms what they called Martian gravity. Art was given a bed in the health center occupying one of these rooms, and there he stayed. He could not walk well in the peculiar lightness of Martian g; he hopped and staggered about, and he still felt bruised internally, and dizzy. But he stayed on just the right side of nausea, which he was thankful for even though it was not a very pleasant feeling in itself.

The continuous shuttle was strange. Because of its frequent aerobraking in the atmospheres of Earth, Venus, and Mars, it had somewhat the shape of a hammerhead shark. The ring of rotating rooms was located near the rear of the ship, just ahead of the propulsion center and the ferry docks. The ring spun, and one walked with head toward the centerline of the ship, feet pointing down at the stars under the floor.

About a week into their voyage Art decided to give weightlessness one more try, as the rotating ring was without windows. He went to one of the transfer chambers for getting from the rotating ring to the nonrotating parts of the ship; the chambers were on a narrow ring that moved with the g ring, but could slow.down to match the rest of the ship. The chambers looked just like freight elevator cars, with doors on both sides; when you got in one and pushed the right button, it decelerated through a few rotations to a stop, and the far door opened on the rest of the ship.

So Art tried that. As the car slowed, he began to lose weight, and his gorge began to rise in an exact correspondence. By the time the far door opened he was sweating and had somehow launched himself at the ceiling, where he hurt his wrist catching himself before hitting his head. Pain battled nausea, and the nausea was winning; it took him a couple of caroms to get to the control panel and hit the button to get him moving again, and back into the gravity ring. When the far door closed he settled gently back to the floor, and in a minute Martian gravity returned, and the door he had come in through reopened. He bounced gratefully out, suffering no more than the pain of a sprained wrist. Nausea was far more unpleasant than pain, he reflected #8212; at least certain levels of pain. He would have to get his outside view over the TVs.

He would not be lonely. Most of the passengers and all of the crew spent the majority of their time in the gravity ring, which was therefore fairly crowded, like a full hotel in which most of the guests spent most of their time in the restaurant and bar. Art had seen and read accounts of the continuous shuttles that made them seem like flying Monte Carlos, with permanent residents made up of the rich and bored; a popular vid series had had just such a setting. Art#8217;s ship, the Ganesh, was not like that. It was clear that it had been hurtling around the inner solar system for a good long time now, and always at full capacity; its interiors were getting shabby, and when restricted to the ring it seemed very small, much smaller than the impression one had of these kinds of ships from watching history shows about the Ares. But the First Hundred had lived in about five times as much space as the Ganesh#8217;s g ring, and the Ganesh carried five hundred passengers.

Flight time, however, was only three months. So Art settled down and watched TV, concentrating on documentaries about Mars. He ate in the dining room, which was decorated to look like one of the great ocean liners of the 1920s, and he gambled a bit in the casino, which was decorated to look like one of the Las Vegas casinos of the 1970s. But mostly he slept and watched TV, the two activities melting into each other so that he dreamed very lucidly about Mars, while the documentaries took on a very surreal logic. He saw the famous videotapes of the Russell-Clayborne debate, and that night dreamed he was unsuccessfully arguing with Ann Clay-borne, who, just as in the vids, looked like the farmer#8217;s wife in American Gothic only more gaunt and severe. Another film, taken by a flying drone, also affected him deeply; the drone had dropped off the side of one of the big Marineris cliffs, and fallen for nearly a minute before pulling out and swooping low over the jumbled rock and ice on the canyon floor. Repeatedly in the following weeks Art dreamed of making that fall himself, and woke up just before impact. It appeared that parts of his unconscious mind felt that the decision to go had been a mistake. He shrugged at this, ate his meals, and practiced his walking. He was biding his time. Mistake or not, he was committed.

Fort had given him an encryption system, and instructions to report back on a regular basis, but in transit he found there was very little to say. Dutifully he sent off a monthly report, each one the same: We#8217;re on our way. All seems well. There was never any reply.

And then Mars swelled up like an orange thrown at the TV screens, and soon after that they were there, crushed into their g couches by an extremely violent aerobraking, and then crushed again in their ferry#8217;s chairs; but Art came through these flattening decelerations like a veteran, and after a week in orbit, still rotating, they docked with New Clarke. New Clarke had only a very small gravity, which barely held people to the floor, and made Mars appear to be overhead. Art#8217;s space sickness returned. And he had a two-day wait before his reservation for an elevator ride.

The elevator cars proved to be like slender tall hotels, and they ran their tightly packed human cargo down toward the planet over a period of five days, with no gravity to speak of until the last couple of days, when it got stronger and stronger, until the elevator car slowed and descended gently into the receiving facility called the Socket, just west of Sheffield on Pavonis Mons, and the g came to something like the g in the Ganesh#8217;s g ring. But a week of space sickness had left Art completely devastated, and as the elevator car opened, and they were guided out into something very like an airport terminal, he found himself scarcely able to walk, and amazed at how much nausea decreased one#8217;s desire to live. It was four months to the day since he had gotten the fax from William Fort.

The trip from the Socket into Sheffield proper was by subway, but Art would have been too miserable to notice a view even if there had been one. Wasted and unsteady, he tiptoed bouncily down a tall hallway after someone from Praxis, and collapsed thankfully on a bed in a small room. Martian g felt blessedly solid when he was lying down, and after a while he fell asleep.

When he woke he could not remember where he was. He looked around the little room, completely disoriented, wondering where Sharon had gone and why their bedroom had gotten so small. Then it came back. He was on Mars.

He groaned and sat up. He felt hot and yet detached from his body, and everything was pulsing slightly, though the room lights appeared to be functioning normally. There were drapes covering the wall opposite the door, and he stood and walked over, and opened them with a single pull.

#8220;Hey!#8221; he cried, leaping back. He woke up a second time, or so it felt.

It was like the view out an airplane window. Endless open space, a bruise-colored sky, the sun like a blob of lava; and there far below stretched a flat rocky plain #8212; flat and round, as it lay at the bottom of an enormous circular cliff #8212; extremely circular, remarkably circular, in fact, for a natural feature. It was difficult to estimate how distant the far side of the cliff was. Features of the cliff were perfectly clear, but structures on the opposite rim were teensy; what looked like an observatory could have fit on a pin-head.

This, he concluded, was the caldera of Pavonis Mons. They had landed at Sheffield, so really there could be no doubt about it. Therefore it was some sixty kilometers across the circle to that observatory, as Art recalled from his video documentaries, and five kilometers to the floor. And all of it completely empty, rocky, untouched, primordial #8212; the volcanic rock as bare as if cooled the week before #8212; nothing at all of humanity in it #8212; no sign of terra-forming. It must have looked exactly like this to John Boone, a half century before. And so #8230; alien. And frig. Art had looked into the calderas of Etna and Vesuvius, while on vacation from Tehran, and those two craters were big by Terran standards, but you could have lost a thousand of them in this, this thing, this hole#8230;

He closed the drapes and got slowly dressed, his mouth imitating the shape of the unearthly caldera.

A friendly Praxis guide named Adrienne, tall enough to be a Martian native but possessing a strong Australian accent, collected him and took him and half a dozen other new arrivals on a tour of the town. Their rooms turned out to be on the city#8217;s lowest level, though it wouldn#8217;t be lowest for long; Sheffield was in the process of burrowing downward these days, to give as many rooms as possible the view onto the caldera that had so disconcerted Art.

An elevator took them up nearly fifty stories, and let them out in the lobby of a shiny new office building. They walked out its big revolving doors and emerged on a wide grassy boulevard, and walked down it past squat buildings faced with polished stone and big windows, separated by narrow grassy side streets, and a great number of construction sites, as many buildings were still in various stages of completion. It was going to be a handsome town, the buildings mostly three and four stories tall, getting taller as they moved south, away from the caldera rim. The green streets were crowded with people, and the occasional small tram running on narrow tracks set in the grass; there was a general air of bustle and excitement, caused no doubt by the arrival of the new elevator. A boom town.

The first place Adrienne took them was across a boulevard to the caldera rim. She led the seven newcomers out into a thin curving park, to the nearly invisible tenting that encased the town. The transparent fabrics were held in place by equally transparent geodesic struts, anchored in a chest-high perimeter wall. #8220;The tenting has to be stronger than usual up here on Pavonis,#8221; Adrienne told them, #8220;because the atmosphere outside is still extremely thin. It#8217;ll always be thinner than the lowlands, by a factor of ten.#8221;

She led them out into a viewing blister in the tent wall and, looking down between their feet, they could see through the blister#8217;s transparent deck, straight down onto the caldera floor some five kilometers below them. People exclaimed in delicious fright, and Art bounced on the clear floor uneasily. The width of the caldera was coming into perspective for him; the north rim was just about as far away as Mount Tamalpais and the Napa hills when one descended into the San Jose airport. That was no extraordinary distance. But the depth below, the depth; over five kilometers, or about twenty thousand feet. #8220;Quite a hole!#8221; Adrienne said.

Mounted telescopes and display plaques with map drawings enabled them to spot the previous version of Sheffield, now lying on the caldera floor. Art had been wrong about the caldera#8217;s untouched primeval nature; an insignificant pile of cliff-bottom talus, with some shiny dots in it, was in fact the ruins of the original city.

Adrienne described with great gusto the destruction of the town in 2061. The falling elevator cable had, of course, crushed the suburbs east of its socket in the very first moments of the fall. But then the cable had wrapped all the way around the planet, delivering a massive second blow to the south side of town, a blow which had caused an undiscovered fault in the basalt rim to give way. About a third of the town had been on the wrong side of this fault, and had fallen the five kilometers to the caldera floor. The remaining two-thirds of the town had been knocked flat. Luckily the occupants had mostly evacuated in the four hours between the detachment of Clarke and the second coming of the cable, so loss of life had been minimized. But Sheffield had been utterly destroyed.

For many years after that, Adrienne told them, the site had lain abandoned, a wreck like so many other towns after the unrest of #8216;61. Most of those other towns had been left in ruins, but Sheffield#8217;s location remained the ideal place for tethering a space elevator, and when Subarashii began organizing the in-space construction of a new one in the late 2080s, construction on the ground had rapidly followed. A detailed areological investigation had found no other faults in the southern rim, which had justified rebuilding right on the edge, on the same site as before. Demolition vehicles had cleared the wreckage of the old town, shoving most of it over the rim, and leaving only the easternmost section of town, around the old socket, as a kind of monument to the disaster #8212; also as the central element of a little tourist industry, which had clearly been an important part of the town#8217;s income in the fallow years before an elevator had been reinstalled.

Adrienne#8217;s next point on the tour led them out to see this preserved bit of history. They took a tram to a gate in the east wall of the tent, and then walked through a clear tube into a smaller tent, which covered the blasted ruins, the concrete mass of the old cable facility, and the lower end of the fallen cable. They walked a roped path that had been cleared of wreckage, staring curiously at the foundations and twisted pipes. It looked like the results of saturation bombing.

They came to a halt under the butt end of the cable, and Art observed it with professional interest. The big cylinder of black carbon filaments looked nearly undamaged by the fall, although admittedly this was the part that had hit Mars with the least force. The end had jammed down into the Socket#8217;s big concrete bunker, Adrienne said, then been dragged a couple of kilometers as the cable had fallen down the eastern slope of Pavonis. That wasn#8217;t that much of a beating for material designed to withstand the pull of an asteroid swinging beyond the areosynchronous point.

And so it lay there, as if waiting to be straightened up and put back in place: cylindrical, two stories high, its black bulk encrusted by steel tracks and collars and the like. The tent only covered.a hundred meters or so of it; after that it ran on uncovered, east along the wide rounded plateau of the rim, until it disappeared over the rim#8217;s outer edge, which formed their horizon #8212; they could see nothing of the planet below. But out away from the town they could see better than ever that Pavonis Mons was huge #8212; its rim alone was an impressive expanse, a doughnut of flat land perhaps thirty kilometers wide, from the abrupt inner edge of the caldera to the more gradual drop-off down the volcano#8217;s flanks. Nothing of the rest of Mars could be seen from their vantage point, so it seemed they stood on a high circular ring world, under a dark lavender sky.

Just to the south of them, the new Socket was like a titanic concrete bunker, the new elevator cable rising out of it like an elevator cable, standing alone as if in some version of the Indian rope trick, thin and black and straight as a plumb line dropping down from heaven #8212; visible for only a few tall skyscrapers#8217; worth of height, at most #8212; and, given the wreckage they stood in, and the immensity of the volcano#8217;s bare rocky peak, as fragile-looking as if it were a single carbon nanotube filament, rather than a bundle of billions of them, and the strongest structure ever made. #8220;This is weird,#8221; Art said, feeling hollow and unsettled.

After their tour of the ruins, Adrienne took them back to a plaza cafe in the middle of the new town, where they had lunch. Here they could have been in the heart of a fashionable district in any town anywhere #8212; it could have been Houston or Tbilisi or Ottawa, in some neighborhood where a lot of noisy construction marked a fresh prosperity. When they went back to their rooms, the subway system was likewise familiar to the eye #8212; and when they got out, the halls of the Praxis floors were those of a fine hotel. All utterly familiar #8212; so much so that it was again a shock to walk into his room and look out the window and see the awesome sight of the caldera #8212; the bare fact of Mars, immense and stony, seeming to exert a kind of vacuum pull on him through the window. And in fact if the windowpane were to break the pressure blowout would certainly suck him immediately into that space; an unlikely eventuality, but the image still gave him an unpleasant thrill. He closed the drapes.

And after that he kept the drapes closed, and tended to stay on the side of his room away from the window. In the mornings he dressed and left the room quickly, and attended orientation meetings run by Adrienne, which were joined by a score or so of new arrivals. After lunching with some of them, he spent his afternoons touring the town, working earnestly on his walking skills. One night he thought to send a coded report off to Fort: On Mars, going through orientation. Sheffield is a nice town. My room has a view. There was no reply.

Adrienne#8217;s orientation took them to a number of Praxis buildings, both in Sheffield and up the east rim, to meet people in the transnational#8217;s Martian operations. Praxis had much more of a presence on Mars than it did in America. During Art#8217;s afternoon walks he tried to gauge the relative strengths of the transnationals, just by the little plates on the sides of the buildings. All the biggest transnats were there #8212; Armscor, Subarashii, Oroco, Mitsubishi, The 7 Swedes, Shellalco, Gentine, and so on #8212; each occupying a complex of buildings, or even entire neighborhoods of the town. Clearly they were all there because of the new elevator, which had made Sheffield once again the most important city on the planet. They were pouring money into the town, building submartian subdivisions, and even entire tent suburbs. The sheer wealth of the transnats was obvious in all the construction #8212; and also, Art thought, in the way people moved: there were a lot of people bouncing around the streets just as clumsily as he was, newcomer businessmen or mining engineers or the like, concentrating with furrowed brow on the act of walking. It was no great trick to pick out the tall young natives, with their catlike coordination; but they were in a distinct minority in Sheffield, and Art wondered if that was true everywhere on Mars.

As for architecture, space under the tent was at a premium, and so the completed buildings were bulky, often cubical, occupying their lots right out to the street and right up to the tent. When all the construction was finished there would only be a network of ten triangular plazas, and the wide boulevards, and the curving park along the rim, to keep the town from being a continuous mass of squat skycrapers, faced with polished stone of various shades of red. It was a city built for business.

And it looked to Art like Praxis was going to get a good share of that business. Subarashii was the general contractor for the elevator, but Praxis was supplying the software as they had for the first elevator, and also some of the cars, and part of the security system. All these allocations, he learned, had been made by a committee called the United Nations Transitional Authority, supposedly part of the UN, but controlled by the transnats; and Praxis had been as aggressive on this committee as any of the others. William Fort might have been interested in bioinfrastructure, but the ordinary kind was obviously not outside Praxis#8217;s field of operations; there were Praxis divisions building water supply systems, train pistes, canyon towns, wind-power generators, and areother-mal plants. The latter two were widely regarded as marginal endeavors, as the new orbiting solar collectors and a fusion plant in Xanthe were turning out so well, not to mention the older generation of integral fast reactors. But local energy sources were the specialty of the Praxis subsidiary Power From Below, and so that was what they did, working hard in the outback.

Praxis#8217;s local salvage subsidiary, the Martian equivalent of Dumpmines, was called Ouroborous, and like Power From Below it was also fairly small. In truth, as the Ouroborous people were quick to tell Art when they met one morning, there was not a large garbage output on Mars; almost everything was recycled or put to use in creating agricultural soil, so each settlement#8217;s dump was really more of a holding facility for miscellaneous materials, awaiting their particular reuse. Ouroborous therefore got its business by finding and collecting the garbage or sewage that was somehow recalcitrant #8212; toxic, or orphaned, or simply inconvenient #8212; and then finding ways to turn it to use.

The Ouroborous team in Sheffield occupied one floor of Praxis#8217;s downtown skyscraper. The company had gotten its start excavating the the old town, before the ruins had been so unceremoniously shoved over the side. A man named Zafir headed the fallen cable salvage project, and he and Adrienne accompanied Art to the train station, where they got on a local train and took a short ride around to the east rim, to a line of suburb tents. One of the tents was the Ouroborous storage facility, and just outside it, among many other vehicles, was a truly gigantic mobile processing factory, called the Beast. The Beast made a SuperRathje look like a compact car #8212; it was a building rather than a vehicle, and almost entirely robotic. Another Beast was already out processing the cable in west Tharsis, and Art was slated to go out and make an on-site inspection of it. So Zafir and a couple of technicians showed him around the inside of the training vehicle, ending up in a wide compartment on the top floor, where there were living quarters for any humans who might be visiting.

Zafir was enthusiastic about what the Beast out on west Tharsis had found. #8220;Of course just recovering the carbon filament and the diamond gel helixes gives us a basic income stream,#8221; he said. #8220;And we are doing well with some brecciated exotics metamorphosed in the final hemisphere of the fall. But what you#8217;ll be interested in are the buckyballs.#8221; Zafir was an expert in these little carbon geodesic spheres called buckminsterfullerenes, and he waxed enthusiastic: #8220;Temperatures and pressures in the west Tharsis zone of the fall turned out to be similar to those used in the arc-reactor-synthesis method of making fullerenes, and so there#8217;s a hundred-kilometer stretch out there where the carbon on the bottom side of the cable consists almost entirely of buckyballs. Mostly sixties, but also some thirties, and a variety of superbuckies.#8221; And some of the super-buckies had formed with atoms of other elements trapped inside their carbon cages. These #8220;full fullerenes#8221; were useful in composite manufacturing, but very expensive to make in the lab because of the high amounts of energy required. So they were a nice find. #8220;It#8217;s sorting out the various superbuckies where your ion chromatog-raphy will come in.#8221;

#8220;So I understand,#8221; Art said. He had done work with ion chro-matography during analyses in Georgia, and this was his ostensible reason for being sent into the outback. So over the next few days Zafir and some Beast technicians trained Art in dealing with the Beast, and after these sessions they had dinner together at a small restaurant in the suburb tent on the east rim. After sunset they had a great view of Sheffield, some thirty kilometers around the curve of the rim, glowing in the twilight like a lamp perched on the black abyss.

As they ate and drank, the conversation seldom turned to the matter of Art#8217;s project, and, considering it, Art decided that this was probably a deliberate courtesy on his colleagues#8217; part. The Beast was fully self-operating, and though there were some problems to be solved in sorting out the recently discovered full fullerenes, there must have been local ion chromatographers who could have done the job. So there was no obvious reason why Praxis should have sent Art up from Earth to do it, and there had to be something more to his story. And so the group avoided the topic, saving Art the embarrassment of lies, or awkward shrugs, or an explicit appeal to confidentiality.

Art would have been uncomfortable with any of these dodges, so he appreciated their tact. But it put a certain distance in their conversations. And he seldom saw the other Praxis newcomers, outside of orientation meetings; and he didn#8217;t know anyone else in town, or elsewhere on the planet. So he was a little lonely, and the days passed in an increasing sense of uneasiness, even oppression. He kept the drapes closed on his window view, and ate in restaurants away from the rim. It began to feel a bit too much like the weeks on the Ganesh, which he now understood to have been a miserable time. Sometimes he had to fend off the feeling that it had been a mistake to come.

And so after their last orientation lecture, at a reception luncheon in the Praxis building, he drank more than was his custom, and took a few inhalations from a tall canister of nitrous oxide. Inhalation of recreational drags was a local custom, fairly big among Martian construction workers, he had been told, and there were even little canisters of various gases for sale from dispensers in some public men#8217;s rooms. Certainly the nitrous added a certain extra bubbly quality to the champagne; it was a nice combination, like peanuts and beer, or ice cream and apple pie.

Afterward he walked down the streets of Sheffield bouncing erratically, feeling the nitrous champagne as a kind of antigravita-tional effect, which, added to the Martian baseline, made him feel altogether too light. Technically he weighed about forty kilos, but as he walked along it felt more like five. Very strange, even unpleasant. Like walking on buttered glass.

He nearly ran into a young man, slightly taller than him #8212; a black-haired youth, as slender as a bird and as graceful, who quickly veered away from him and then steadied him with a hand to his shoulder, all in one smooth flow of movement.

The youth looked him in the eye. #8220;Are you Arthur Randolph?#8221;

#8220;Yes,#8221; Art said, surprised. #8220;I am. And who are you?#8221;

#8220;I#8217;m the one who contacted William Fort,#8221; the young man said.

Art stopped abruptly, swaying to get back over his feet. The young man held him upright with a gentle pressure, his hand hot on Art#8217;s upper arm. He regarded Art with a direct look, a friendly smile. Perhaps twenty-five, Art judged, perhaps younger #8212; a handsome youth with brown skin and thick black eyebrows, and eyes that were slightly Asian, set wide over prominent cheekbones. An intelligent look, full of curiosity and a kind of magnetic quality, hard to pin down.

Art took to him instantly, for no reason he could tell. It was just a feeling. #8220;Call me Art,#8221; he said.

#8220;And I am Nirgal,#8221; the youth said. #8220;Let#8217;s go down to Overlook Park.#8221;

So Art walked with him down the grassy boulevard to,the park on the rim. There they strolled the path next to the coping wall, Nirgal helping Art with his drunken turns by frankly seizing his upper arm and steering him. His grasp had an electric penetrating quality to it, and was really very warm, as if the youth had a fever, though there was no sign of it in his dark eyes.

#8220;Why are you here?#8221; Nirgal asked #8212; and his voice, and the look on his face, made the question into something other than a superficial inquiry. Art checked his response, thought about it.

#8220;To help,#8221; he said.

#8220;So you will join us?#8221;

Again the youth somehow made it clear that he meant something different, something fundamental.

And Art said, #8220;Yes. Anytime you like.#8221;

Nirgal smiled, a quick delighted grin that he only partly overmastered before he said, #8220;Good. Very good. But look, I#8217;m doing this on my own. Do you understand? There are people who wouldn#8217;t approve. So I want to slip you in among us, as if it were an accident. That#8217;s okay with you?#8221;

#8220;That#8217;s fine.#8221; Art shook his head, confused. #8220;That#8217;s how I was planning on doing it anyway.#8221;

Nirgal stopped by the observation bubble, took Art#8217;s hand and held it. His gaze, so open and unflinching, was contact of another kind. #8220;Good. Thanks. Just keep doing what you#8217;re doing, then. Go out on your salvage project, and you#8217;ll be picked up out there. We#8217;ll meet again after that.#8221;

And he was off, walking across the park in the direction of the trr.m station, moving with the long graceful lope that all the young natives seemed to have. Art stared after him, trying to remember everything about the encounter, trying to put his finger on what had made it so charged. Simply the look on the youth#8217;s face, he decided #8212; not just the unself-conscious intensity one sometimes saw on the faces of the young, but more #8212; some humorous power. Art remembered the sudden grin unleashed when Art had said (had promised) that he would join them. Art grinned himself.

When he got back to his room, he walked right to the window and opened the drapes. He went over to the table by his bed, and sat and turned on his lectern, and looked up Nirgal. No person listed by that name. There was a Nirgal Vallis, between Argyre Basin and Valles Marineris. One of the best examples of a water-carved channel on the planet, the entry said, long and sinuous. The word was the Babylonian name for Mars.

Art went back to the window and pressed his nose against the glass. He looked right down the throat of the thing, into the rocky heart of the monster itself. Horizontal banding of the curved walls, the broad round plain so far below, the sharp edge where it met the circular wall #8212; the infinite shadings of maroon, rust, black, tan, orange, yellow, red #8212; everywhere red, all the variations of red#8230; He drank it in, for the first time unafraid. And as he looked down this enormous coring into the planet, a new feeling leaped into him to replace the fear, and he shivered and hopped in place, in a little dance. He could handle the view. He could handle the gravity. He had met a Martian, a member of the underground, a youth with a strange charisma, and he would be seeing more of him, more of all of them#8230; He was on Mars.

And a few days later he was on the west slope of Pavonis Mons, driving a small rover down a narrow road that paralleled a band of disturbed volcanic rubble, with what looked like a cog railway track running right down it. He had sent a final coded message to Fort, telling him that he was taking off, and had gotten the only reply of his journey so far: Have a nice trip.

The first hour of his drive held what everyone had told him would be its most spectacular sight: going over the western rim of the caldera, and starting down the outer slope of the vast volcano. This occurred about sixty kilometers west of Sheffield. He drove over the southwest edge of the vast rim plateau, and started downhill, and a horizon appeared very far below, and very far away #8212; a slightly curved hazy white bar, like the view of Earth as seen from a space plane#8217;s window #8212; which made sense, as the peak of Pavonis was about eighty-five thousand feet above Amazonis Planitia. So it was a huge view, the most forcible reminder possible of the stupendous height of the Tharsis volcanoes. And he had a great view of Arsia Mons at that moment, in fact, the southernmost of the three volcanoes lined up on Tharsis, bulking over the horizon to his left like a neighboring world. And what looked like a black cloud, over the far horizon to the northwest, could very possibly be Olympus Mons itself!

So the first day#8217;s drive was all downhill, but Art#8217;s spirits remained high. #8220;Toto, there is no chance we are in Kansas anymore. We#8217;re #8230;offto see the wizard! The wonderful wizard of Mars!#8221;

The road paralleled the fall line of the cable. The cable had hit the west side of Tharsis with a tremendous impact, not as great as during the final wrap, of course, but enough to create the interesting superbuckies Art had been sent out to investigate. The Beast he was going down to meet had already salvaged the cable in this vicinity, however, and the cable was almost entirely gone; the only thing left of it was a set of old-fashioned-looking train tracks, with a third cog rail running down the middle. The Beast had made these tracks out of carbon from the cable, and then used other parts of the cable, and magnesium from the soil, to make little self-powered cog rail mining cars, which then carried salvage cargo back up the side of Pavonis to the Ouroborous facilities in Sheffield. Very neat, Art thought as he watched a little robot car roll past him in the opposite direction, up the tracks toward the city. The little train car was black, squat, powered by a simple motor engaging the cog track, filled with a cargo that was no doubt mostly carbon nanotube filaments, and capped on top by a big rectangular block of diamond. Art had heard about this in Sheffield, and so was not surprised to see it. The diamond had been salvaged from the double helixes strengthening the cable, and the blocks were actually much less valuable than the carbon filament stored underneath them #8212; basically a kind of fancy hatch door. But they did look nice.

On the second day of his drive, Art got off the immense cone of Pavonis, and onto the Tharsis bulge proper. Here the ground was much more littered than the volcano#8217;s side had been with loose rock, and meteor craters. And down here, everything was blanketed with a drift of snow and sand, in a mix that looked like equal shares of both. This was the firn slope of west Tharsis, an area where storms coming in from the west frequently dumped loads of snow, which never melted but instead built up year by year, packing down the snow on the bottom. So far the pack consisted only of crushed snow, called firn, but after more years of compaction the lowest layers would be ice, and the slopes glaciers.

Now the slopes were still punctuated by big rocks sticking out of the firn, and small crater rings, the craters mostly less than a kilometer across, and looking as fresh as if they had been blasted the day before, except for the sandy snow now filling them.

When he was still many kilometers away, Art caught sight of the Beast salvaging the cable. The top of it appeared over the western horizon, and over the next hour the rest of it reared into view. Out on the vast empty slope it seemed somewhat smaller than its twin up in East Sheffield, at least until he drove under its flank, when once again it became clear that it was as big as a city block. There was even a square hole in the bottom of one side which looked for all the world like the entrance to a parking garage. Art drove his rover right at this hole #8212; the Beast was moving at three kilometers a day, so it was no trick to hit it #8212; and once inside, he drove up a curving ramp, following a short tunnel into .a lock. There he spoke by radio to the Beast#8217;s AI, and doors behind his rover slid shut, and in a minute he could simply get out of his car, and go over to an elevator door, and take an elevator up to the observation deck.

It did not take long to realize that life inside the Beast was not the essence of excitement, and after checking in with the Sheffield office, and taking a look at the ion chromatograph down in the lab, Art went back out in the rover to have a more extensive look around. This was the way things went when working the Beast, Zafir assured him; the rovers were like pilot fishes swimming around a great whale, and though the view from the observation deck was nice and high, most people ended up spending a good part of their days out driving around.

So Art did that. The fallen cable out in front of the Beast showed clearly how much harder it had been coming down here than it had back at the start of its fall. Here it was buried to perhaps a third of its diameter, and the cylinder was flattened, and marked by long cracks running along its sides, revealing its structure, which consisted of bundles of bundles of carbon nanotube filament, still one of the strongest substances known to materials science, though apparently the current elevator#8217;s cable material was stronger yet.

The Beast straddled this wreckage, about four times as tall as the cable; the charred black semicylinder disappeared into a hole at the front end of the Beast, from which came a grumbling, low, nearly subsonic vibration. And then, every day at about two in the afternoon, a door at the back of the Beast slid open over the tracks always being excreted from the back end of the Beast, and one of the diamond-capped train cars would roll out, winking in the sunlight, and glide off toward Pavonis. The trains disappeared over the high eastern horizon into the apparent #8220;depression#8221; now between him and Pavonis about ten minutes after emerging from their maker.

After viewing the daily departure, Art would take a drive in the pilot-fish rover, investigating craters and big isolated boulders, and, frankly, looking for Nirgal, or rather waiting for him. After a few days of this, he added the habit of suiting up and taking a walk outside for a few hours every afternoon, strolling beside the cable or the pilot fish, or hiking out into the surrounding countryside.

It was odd-looking terrain, not only because of the even distribution of millions of black rocks, but because the hard blanket of firn had been sculpted into fantastic shapes by the sandblaster winds: ridges, boles, hollows, tear-shaped tailings behind every exposed rock, etc. #8212; sastrugi, these shapes were called. It was fun to walk around among these extravagant aerodynamic extrusions of reddish snow.

Day after day he did this. The Beast ground slowly westward. He found that the windswept bare tops of the rocks were often colored by tiny flakes that were scales of fast lichen, a kind that grew quickly, or at least quickly for lichen. Art picked up a couple of sample rocks, and took them back into the Beast, and read about the lichen curiously. These apparently were engineered cryptoen-dolithic lichens, meaning they lived in rock, and at this altitude they were living right at the edge of the possible #8212; the article on them said that over ninety-eight percent of their energy was used simply to stay alive, with less than two percent going toward reproduction. And this was a big improvement over the Terran species they had been based on.

More days passed, then weeks; but what could he do? He kept on collecting lichen. One of the cryptoendoliths he found was the first species to survive on the Martian surface, the lectern said, and it had been designed by members of the fabled First Hundred. He broke apart some rocks to have a better look, and found bands of the lichen growing in the rocks#8217; outer centimeter: first a yellow stripe right at the surface, then a blue stripe under that, then a green one. After that discovery he often stopped on his walks to kneel and put his faceplate to colored rocks sticking up out of the firn, marveling at the crusty scales and their intense pale colors #8212; yellows, olives, khaki greens, forest greens, blacks, grays.

One afternoon he drove the pilot fish far to the north of the Beast, and got out to hike around and collect samples. When he returned, he found that the lock door in the side of the pilot fish would not open. #8220;What the hell?#8221; he said aloud.

It had been so long that he had forgotten that something was supposed to happen. The happening had taken the form of some kind of electronic failure, apparently. Assuming that this was the happening, and not #8230; something else. He called in over the intercom, and tried every code he knew on the keypad by the lock door, but nothing had any effect. And since he couldn#8217;t get back in, he couldn#8217;t turn on the emergency systems. And his helmet#8217;s intercom had a very limited range #8212; the horizon, in effect #8212; which down here off Pavonis had shrunk to a Martian closeness, only a few kilometers away in all directions. The Beast was well over the horizon, and though he could probably walk to it, there would be a section of the hike where both Beast and pilot fish would be over the horizon, and himself alone in a suit, with a limited air supply#8230;

Suddenly the landscape with its dirty sastrugi took on an alien, ominous cast, dark even in the bright sunshine. #8220;Well, hell,#8221; Art said, thinking hard. He was out here, after all, to get picked up by the underground. Nirgal had said it was going to look like an accident. Of course this was not necessarily that accident, but whether it was or it wasn#8217;t, panic was not going to help. Best to make the working assumption that it was a real problem, and go from there. He could try walking back to the Beast, or he could try getting into the pilot-fish rover.

He was still thinking things over, and typing at the keypad of the lock door like a champion speed-typist, when he was tapped hard on the shoulder. #8220;Aaa!#8221; he shouted, leaping around.

There were two of them, in walkers and scratched old helmets. Through their faceplates he could see them: a woman with a face like a hawk#8217;s, who looked like she would be happy to bite him; and a short thin-faced black man, with gray dreadlocks crowding the border of his faceplate, like the rope picture frames one sometimes sees in nautical restaurants.

It was the man who had tapped Art on the shoulder. Now he lifted three fingers, pointing at his wrist console. The intercom band they were using, no doubt. Art switched it on. #8220;Hey!#8221; he cried, feeling more relieved than he ought to, considering that this was probably Nirgal#8217;s setup, so that he had never been in danger. #8220;Hey, I seem to be locked out of my car? Could you give me a lift?#8221;

They stared at him.

The man#8217;s laugh was scary. #8220;Welcome to Mars,#8221; he said.