It was Adell"s turn to be contrary. "Maybe we can build things up again someday," he said.
"Never."
"Why not? Someday."
"Never."
"Ask Multivac."
"Youask Multivac. I dare you. Five dollars says it can"t be done."
Adell was just drunk enough to try, just sober enough to be able to phrase the necessary symbols and operations into a question which, in words, might have corresponded to this: Will mankind one day without the net expenditure of energy be able to restore the sun to its full youthfulness even after it had died of old age?
Or maybe it could be put more simply like this: How can the net amount of entropy of the universe be ma.s.sively decreased?
Multivac fell dead and silent. The slow flashing of lights ceased, the distant sounds of clicking relays ended.
Then, just as the frightened technicians felt they could hold their breath no longer, there was a sudden springing to life of the teletype attached to that portion of Multivac. Five words were printed: INSUFFICIENT DATA FOR MEANINGFUL ANSWER.
"No bet," whispered Lupov. They left hurriedly.
By next morning, the two, plagued with throbbing head and cottony mouth, had forgotten the incident.
Jerrodd, Jerrodine, and Jerrodette I and II watched the starry picture in the visiplate change as the pa.s.sage through hypers.p.a.ce was completed in its non-time lapse. At once, the even powdering of stars gave way to the predominance of a single bright marble-disk, centered.
"That"s X-23," said Jerrodd confidently. His thin hands clamped tightly behind his back and the knuckles whitened.
The little Jerrodettes, both girls, had experienced the hypers.p.a.ce pa.s.sage for the first time in their lives and were self-conscious over the momentary sensation of inside-outness. They buried their giggles and chased one another wildly about their mother, screaming, "We"ve reached X-23-we"ve reached X-23-we"ve-"
"Quiet, children," said Jerrodine sharply. "Are you sure, Jerrodd?" "What is there to be but sure?" asked Jerrodd, glancing up at the bulge of featureless metal just under the ceiling. It ran the length of the room, disappearing through the wall at either end. It was as long as the ship.
Jerrodd scarcely knew a thing about the thick rod of metal except that it was called a Microvac, that one asked it questions if one wished; that if one did not it still had its task of guiding the ship to a preordered destination; of feeding on energies from the various Sub-galactic Power Stations; of computing the equations for the hypers.p.a.cial jumps.
Jerrodd and his family had only to wait and live in the comfortable residence quarters of the ship.
Someone had once told Jerrodd that the "ac" at the end of "Microvac" stood for "a.n.a.log computer" in ancient English, but he was on the edge of forgetting even that.
Jerrodine"s eyes were moist as she watched the visiplate. "I can"t help it. I feel funny about leaving Earth."
"Why, for Pete"s sake?" demanded Jerrodd. "We had nothing there. We"ll have everything on X-23.
You won"t be alone. You won"t be a pioneer. There are over a million people on the planet already.
Good Lord, our great-grandchildren will be looking for new worlds because X-23 will be overcrowded."
Then, after a reflective pause, "I tell you, it"s a lucky thing the computers worked out interstellar travel the way the race is growing."
"I know, I know," said Jerrodine miserably.
Jerrodette I said promptly, "Our Microvac is the best Microvac in the world."
"I think so, too," said Jerrodd, tousling her hair.
Itwas a nice feeling to have a Microvac of your own and Jerrodd was glad he was part of his generation and no other. In his father"s youth, the only computers had been tremendous machines taking up a hundred square miles of land. There was only one to a planet. Planetary ACs they were called. They had been growing in size steadily for a thousand years and then, all at once, came refinement. In place of transistors, had come molecular valves so that even the largest Planetary AC could be put into a s.p.a.ce only half the volume of a s.p.a.ceship.
Jerrodd felt uplifted, as he always did when he thought that his own personal Microvac was many times more complicated than the ancient and primitive Multivac that had first tamed the Sun, and almost as complicated as Earth"s Planetary AC (the largest) that had first solved the problem of hyperspatial travel and had made trips to the stars possible.
"So many stars, so many planets," sighed Jerrodine, busy with her own thoughts. "I suppose families will be going out to new planets forever, the way we are now."
"Not forever," said Jerrodd, with a smile. "It will all stop someday, but not for billions of years. Many billions. Even the stars run down, you know. Entropy must increase."
"What"s entropy, daddy?" shrilled Jerrodette II.
"Entropy, little sweet, is just a word which means the amount of running-down of the universe.
Everything runs down, you know, like your little walkie-talkie robot, remember?" "Can"t you just put in a new power-unit, like with my robot?"
"The starsare the power-units, dear. Once they"re gone, there are no more power-units."
Jerrodette I at once set up a howl. "Don"t let them, daddy. Don"t let the stars run down."
"Now look what you"ve done," whispered Jerrodine, exasperated.
"How was I to know it would frighten them?" Jerrodd whispered back.
"Ask the Microvac," wailed Jerrodette I. "Ask him how to turn the stars on again."
"Go ahead," said Jerrodine. "It will quiet them down." (Jerrodette II was beginning to cry, also.) Jerrodd shrugged. "Now, now, honeys. I"ll ask Microvac. Don"t worry, he"ll tell us."
He asked the Microvac, adding quickly, "Print the answer."
Jerrodd cupped the strip of thin cellufilm and said cheerfully, "See now, the Microvac says it will take care of everything when the time comes so don"t worry."
Jerrodine said, "And now, children, it"s time for bed. We"ll be in our new home soon."
Jerrodd read the words on the cellufilm again before destroying it:INSUFFICIENT DATA FOR MEANINGFUL ANSWER.
He shrugged and looked at the visiplate. X-23 was just ahead.
VJ-23X of Lameth stared into the black depths of the three-dimensional, small-scale map of the Galaxy and said, "Are we ridiculous, I wonder, in being so concerned about the matter?"
MQ-17J of Nicron shook his head. "I think not. You know the Galaxy will be filled in five years at the present rate of expansion."
Both seemed in their early twenties, both were tall and perfectly formed.
"Still," said VJ-23X, "I hesitate to submit a pessimistic report to the Galactic Council."
"I wouldn"t consider any other kind of report. Stir them up a bit. We"ve got to stir them up."
VJ-23X sighed. "s.p.a.ce is infinite. A hundred billion Galaxies are there for the taking. More."
"A hundred billion isnot infinite and it"s getting less infinite all the time. Consider! Twenty thousand years ago, mankind first solved the problem of utilizing stellar energy, and a few centuries later, interstellar travel became possible. It took mankind a million years to fill one small world and then only fifteen thousand to fill the rest of the Galaxy. Now the population doubles every ten years-"
VJ-23X interrupted. "We can thank immortality for that." "Very well. Immortality exists and we have to take it into account. I admit it has its seamy side, this immortality. The Galactic AC has solved many problems for us, but in solving the problem of preventing old age and death, it has undone all its other solutions."
"Yet you wouldn"t want to abandon life, I suppose."
"Not at all," snapped MQ-17J, softening it at once to, "Not yet. I"m by no means old enough. How old are you?"
"Two hundred twenty-three. And you?"
"I"m still under two hundred. But to get back to my point. Population doubles every ten years. Once this Galaxy is filled, we"ll have filled another in ten years. Another ten years and we"ll have filled two more.
Another decade, four more. In a hundred years, we"ll have filled a thousand Galaxies. In a thousand years, a million Galaxies. In ten thousand years, the entire known Universe. Then what?"
VJ-23X said, "As a side issue, there"s a problem of transportation. I wonder how many sunpower units it will take to move Galaxies of individuals from one Galaxy to the next."
"A very good point. Already, mankind consumes two sunpower units per year."
"Most of it"s wasted. After all, our own Galaxy alone pours out a thousand sunpower units a year and we only use two of those."
"Granted, but even with a hundred per cent efficiency, we only stave off the end. Our energy requirements are going up in a geometric progression even faster than our population. We"ll run out of energy even sooner than we run out of Galaxies. A good point. A very good point."
"We"ll just have to build new stars out of interstellar gas."
"Or out of dissipated heat?" asked MQ-17J, sarcastically.
"There may be some way to reverse entropy. We ought to ask the Galactic AC."
VJ-23X was not really serious, but MQ-17J pulled out his AC-contact from his pocket and placed it on the table before him.
"I"ve half a mind to," he said. "It"s something the human race will have to face someday."
He stared somberly at his small AC-contact. It was only two inches cubed and nothing in itself, but it was connected through hypers.p.a.ce with the great Galactic AC that served all mankind. Hypers.p.a.ce considered, it was an integral part of the Galactic AC.
MQ-17J paused to wonder if someday in his immortal life he would get to see the Galactic AC. It was on a little world of its own, a spider webbing of force-beams holding the matter within which surges of sub-mesons took the place of the old clumsy molecular valves. Yet despite its sub-etheric workings, the Galactic AC was known to be a full thousand feet across.
MQ-17J asked suddenly of his AC-contact, "Can entropy ever be reversed?" VJ-23X looked startled and said at once, "Oh, say, I didn"t really mean to have you ask that."
"Why not?"
"We both know entropy can"t be reversed. You can"t turn smoke and ash back into a tree."
"Do you have trees on your world?" asked MQ-17J.
The sound of the Galactic AC startled them into silence. Its voice came thin and beautiful out of the small AC-contact on the desk. It said: THERE IS INSUFFICIENT DATA FOR A MEANINGFUL ANSWER.
VJ-23X said, "See!"
The two men thereupon returned to the question of the report they were to make to the Galactic Council.
Zee Prime"s mind spanned the new Galaxy with a faint interest in the countless twists of stars that powdered it. He had never seen this one before. Would he ever see them all? So many of them, each with its load of humanity. But a load that was almost a dead weight. More and more, the real essence of men was to be found out here, in s.p.a.ce.
Minds, not bodies! The immortal bodies remained back on the planets, in suspension over the eons.
Sometimes they roused for material activity but that was growing rarer. Few new individuals were coming into existence to join the incredibly mighty throng, but what matter? There was little room in the Universe for new individuals.
Zee Prime was roused out of his reverie upon coming across the wispy tendrils of another mind.
"I am Zee Prime," said Zee Prime. "And you?"
"I am Dee Sub Wun. Your Galaxy?"
"We call it only the Galaxy. And you?"
"We call ours the same. All men call their Galaxy their Galaxy and nothing more. Why not?"
"True. Since all Galaxies are the same."
"Not all Galaxies. On one particular Galaxy the race of man must have originated. That makes it different."
Zee Prime said, "On which one?"
"I cannot say. The Universal AC would know."
"Shall we ask him? I am suddenly curious."
Zee Prime"s perceptions broadened until the Galaxies themselves shrank and became a new, morediffuse powdering on a much larger background. So many hundreds of billions of them, all with their immortal beings, all carrying their load of intelligences with minds that drifted freely through s.p.a.ce. And yet one of them was unique among them all in being the original Galaxy. One of them had, in its vague and distant past, a period when it was the only Galaxy populated by man.
Zee Prime was consumed with curiosity to see this Galaxy and he called out: "Universal AC! On which Galaxy did mankind originate?"
The Universal AC heard, for on every world and throughout s.p.a.ce, it had its receptors ready, and each receptor lead through hypers.p.a.ce to some unknown point where the Universal AC kept itself aloof.
Zee Prime knew of only one man whose thoughts had penetrated within sensing distance of Universal AC, and he reported only a shining globe, two feet across, difficult to see.
"But how can that be all of Universal AC?" Zee Prime had asked.
"Most of it," had been the answer, "is in hypers.p.a.ce. In what form it is there I cannot imagine."
Nor could anyone, for the day had long since pa.s.sed, Zee Prime knew, when any man had any part of the making of a Universal AC. Each Universal AC designed and constructed its successor. Each, during its existence of a million years or more acc.u.mulated the necessary data to built a better and more intricate, more capable successor in which its own store of data and individuality would be submerged.
The Universal AC interrupted Zee Prime"s wandering thoughts, not with words, but with guidance. Zee Prime"s mentality was guided into the dim sea of Galaxies and one in particular enlarged into stars.