JASON FORBS (S-62B/129876Rd (bio-human): REPORT AT ONCE TO PROJECT LIGHTPROBE FOR IMMEDIATE ASSUMPTION OF DUTIES AS "DESIGNATED ORAL WITNESS ENGINEER."

— BY ORDER OF DIRECTOR Jason let the flimsy message slip from his fingers, fluttering in the gentle, centrifugal pseudo-gravity of the station apartment. Coriolis force-or perhaps the soft breeze from the wall vents-caused it to drift past the edge of the table and land on the floor of the small dining nook.

"Are you going to go?" Elaine asked nervously from Jesse's crib, where she had just put the baby down for a nap. Wide eyes made plain her fear.

"What choice do I have?" Jason shrugged. "My number was drawn. I can't disobey. Not the way the Utilitarian Party has been pushing its weight around. Under the Required Services Act, I'm just another motile, sentient unit, of some small use to the state."

That was true, as far as it went. Jason did not feel it necessary to add that he had actually volunteered for this mission. There was no point. Elaine would never understand.

A woman with a child doesn't need to look for justifications for her existence, Jason thought as he gathered what he would need from the closet.

But I'm tired of being an obsolete, token representative of the Old Race, looked down upon by all the sleek new types. At least this way my kid may be able to say his old man had been good for something, once. It might help Jesse hold his head up in the years to come… years sure to be hard for the old style of human being.

He zipped up his travel suit, making sure of the vac-tight ankle and wrist fastenings. Elaine came to him and slipped into his arms.

"You could try to delay them," she suggested without conviction… System-wide elections are next month. The Ethicalists and the Naturalists have declared a united campaign… "

Jason stroked her hair, shaking his head. Hope was deadly. They could not afford it.

"It's no use, Elaine. The Utilitarians are completely in charge out here at the station, as well as nearly everywhere else in the solar system. Anyway, everyone knows the election is a foregone conclusion."

The words stung, but they were truthful. On paper, it would seem there was still a chance for a change. Biological humans still outnumbered the mechanical and cyborg citizen types, and even a large minority of the latter had misgivings about the brutally logical policies of the Utilitarian Party.

But only one biological human in twenty bothered to vote any more.

There were still many areas of creativity and skill in which mechano-cryo citizens were no better than organics, but a depressing conviction weighed heavily upon the old type. They knew they had no place in the future. The stars belonged to the other varieties, not to them.

"I've got to go." Gently, Jason peeled free of Elaine's arms. He took her face in his hands and kissed her one last time, then picked up his small travel bag and helmet. Stepping out into the corridor, he did not look back to see the tears that he knew were there, laying soft, saltwater history down her face.

The quarters for biological human beings lay in the Old Wheel… a part of the research station that had grown ever shabbier as old style scientists and technicians lost their places to models better suited to the harsh environment of space.

Once, back in the days when mechano-cryo citizens were rare, the Old Wheel had been the center of excited activity here beyond the orbit of Neptune. The first starships had been constructed by clouds of space-suited humans, like tethered bees swarming over mammoth hives. Giant "slowboats," restricted to speeds far below that of light, had ventured forth from here, into the interstellar night.

That had been long ago, when organic people had still been important. But even then there were those who had foreseen what was to come.

Nowhere were the changes of the last century more apparent than here at Project Lightprobe. The old type now only served in support roles, few contributing directly to the investigations… perhaps the most important in human history.

Jason's vac-sled was stored in the Old Wheel's north hub airlock. Both sled and suit checked out well, but the creaking outer doors stuck halfway open when he tried to leave. He had to leap over with a spanner and pound the great hinges several times to get them unfrozen. The airlock finally opened in fits and starts.

Frowning, he remounted the sled and took off again.

The Old Wheel gets only scraps for maintenance, he thought glumly. Soon there'll be an accident, and the Utilitarians will use it as an excuse to ban organic humans from every research station in the solar system.

The Old Wheel fell behind as short puffs of gas sent his sled toward the heart of the research complex. For a long time he seemed to ride the slowly rotating wheel's shadow, eclipsing the dim glow of the distant sun.

From here, Earth-home was an invisible speck. Few ever focused telescopes on the old world. Everyone knew that the future wasn't back there but out here and beyond, with the innumerable stars covering the sky.

Gliding slowly across the gulf between the Old Wheel and the Complex, Jason had plenty of time to think.

Back when the old slowboats had set forth from here to explore the nearest systems, it had soon became apparent that only mechanicals and cyborgs were suited for interstellar voyages. Asteroid-sized arks-artificial worldlets capable of carrying entire ecospheres-remained a dream out of science fiction, economically beyond reach. Exploration ships could be sent much farther and faster if they did not have to carry the complex artificial environments required by old style human beings.

By now ten nearby stellar systems had been explored, all by crews consisting of "robo-humans." There were no plans to send any other kind, even if, or when, Earthlike planets were discovered. It just wouldn't be worth the staggering investment required.

That fact, more than anything else, had struck at the morale of biological people in the solar system. The stars, they realized, were not for them. Resignation led to a turning away from science and the future. Earth and the "dirt" colonies were apathetic places, these days. Utilitariansism was the guiding philosophy of the times.

Jason hadn't told his wife his biggest reason for volunteering for this mission. He was still uncertain he understood it very well himself. Perhaps he wanted to show people that a biological citizen could still be useful, and contribute to the advance of knowledge.

Even if it were by a task so humble as a suicide mission.

He saw the lightship ahead, just below the shining spark of Sirius, a jet-black pearl half a kilometer across. Already he could make out the shimmering of its fields as its mighty engines were tuned for the experiment ahead.

The technicians were hoping that this time it would work. But even if it failed again, they were determined to go on trying. Faster-than-light travel was not something anyone gave up on easily, even a robot with a life span of five hundred years. The dream, and the obstinacy to pursue it, was a strong inheritance from the parent race.

Next to the black experimental probe, with its derricks and workshops, was the towering bulk of the central cooling plant, by far the largest object in the Complex. The cooling plant made even the Old Wheel look like a child's toy hoop. Jason's rickety vac-sled puffed beneath the majestic globe, shining in the sky like a great silvery planet.

On this, the side facing the sun, the cooling globe's reflective surface was nearly perfect. On the other side, a giant array of fluid-filled radiators stared out on to intergalactic space, chilling liquid helium down to the basic temperature of the universe-a few degrees above absolute zero.

The array had to stare at the blackness between the galaxies. Faint sunlight-even starlight-would heat the cooling fluid too much. That was the reason for the silvery reflective backing. The amount of infrared radiation leaving the finned coolers had to exceed the few photons coming in in order for the temperature of the helium to drop far enough.

The new types of citizens might be faster and tougher, and in some ways smarter, than old style humans. They might need neither food nor sleep. But they did require a lot of liquid helium to keep their supercooled, superconducting brains humming. The shining, well-maintained cooling plant was a reminder of the priorities of the times.

Some years back, an erratic bio-human had botched an attempt to sabotage the cooling plant. All it accomplished was to have the old style banished from that part of the station. And some mechano-cryo staff members who had previously been sympathetic with the Ethicalist cause switched to Utilitarianism as a result.

The mammoth sphere passed over and behind Jason. In moments there was only the lightship ahead, shimmering within its cradle of spotlit gantries. A voice cut in over his helmet speaker in a sharp monotone.

"Attention approaching biological… you are entering a restricted zone. Identify yourself at once."

Jason grimaced. The station director had ordered all mechano personnel-meaning just about everybody left-to reprogram their voice functions along "more logical tonal lines." That meant they no longer mimicked natural human intonations, but spoke in a new, shrill whine.

Jason's few android and cyborg friends-colleagues on the support staff-had whispered their regrets. But those days it was dangerous to be in the minority. All soon adjusted to the new order.

"Jason Forbs, identifying self." He spoke as crisply as possible, mimicking the toneless Utilitarian dialect. He spelled his name and gave his ident code. "Oral witness engineer for Project Lightprobe, reporting for duty."

There was a pause, then the unseen security overseer spoke again.

"Cleared and identified, Jason Forbs. Proceed directly to slip nine, scaffold B. Escorts await your arrival."

Jason blinked. Had the voice softened perceptibly? A closet Ethicalist, perhaps, out here in this Utilitarian stronghold.

"Success, and an operative return are approved outcomes," the voice added, hesitantly, with just a hint of tonality.

Jason understood Utilitarian dialect well enough to interpret the simple good luck wish. He didn't dare thank the fellow, whoever he might be, whatever his body form. But he appreciated the gesture.