“We have special needs,” he answered soberly. “We have never claimed to be … common humans. Foremost among our needs is the conserving of our heritage. Only here is it secure. Elsewhere our kind exists as individuals or nuclear families, all too susceptible to going wild.”
“Uh, goin wild ?
“Outbreeding. Outmarrying, if you will. Losing themselves and their descendants in the ruck.”
She stiffened. He saw and went on quickly. “Forgive me. That sounded more snobbish than I intended. It’s a mere phrase in the local dialect. If you reflect upon our history you’ll understand why we are determined to maintain our identity.”
Interest quelled umbrage. Besides, he was intelligent and good-looking and they were bound along a stately street, downhill toward a bay whose minute planet life made the water shine iridescent. Persons they passed gave her glances—marvelling from children, knowing from adults, admiring and desiring from young men. Often the latter hailed Kukulkan and moved close in unmistakable hopes of an introduction. He gave them a signal which she guessed meant, “Scram. I saw her first.” The compliment was as refreshing as the wind off the sea.”
“Frankly, I’m ignorant of your past,” she acknowledged. “I’m a waif, remember, who’d heard little more than the name of, your people.”
“Well, that can be remedied,” said Kukulkan cordially, “though not in an hour, when our origins lie almost a thousand years back in time, on Terra itself.”
“I know that, but hardly any more, not how or why it happened or anything. Tell me, please.”
Pride throbbed through the solemnity of his tone. He was a superb speaker.
“As you wish. Travel beyond the Solar System was just beginning. Matthew Zachary saw what an unimaginably great challenge it cast at humankind, peril as well as promise, hardihood required for hope, adaptability essential but not at the cost of integrity. A geneticist, he set himself the goal of creating a race that could cope with the infinite strangeness it would find. Yes, machines were necessary; but they were not sufficient. People must go into the deeps too, if the whole human adventure were not to end in whimpering pointlessness. And go they would. It was in the nature of the species. Matthew Zachary wanted to provide them the best possible leaders.”
Kukulkan waved his left hand, since Diana had his right arm. “No, not ‘supermen’, not any such nonsense,” he continued. “Why lose humanness in the course of giving biological organisms attributes which would always be superior in machines? He sought the optimum specimen—the all-purpose human, to use a colloquialism. What would be the marks of such a person? Some were obvious. A high, quick, wide-ranging intelligence; psychological stability; physical strength, coordination, organs and functions normal or better, resistance to disease, swift recuperation from any sickness or injury that did occur and was not irreversible—you can write the list yourself.”
“I thought a lot of that had already been done,” Diana said.
“Of course,” Kukulkan agreed. “Genetic treatment was in process of eliminating heritable defects. To this day, they seldom recur, in spite of ongoing mutation and in spite of the fact that comparatively few prospective parents avail themselves of genetic services. Many can’t, where they are. I daresay your conception was entirely random, ‘natural.’ But thanks to ancestors who did have the care, you are unlikely to come down with cancer or schizophrenia or countless other horrors that you may never even have heard named.
“Still, this does not mean that any zygote is as good as any other. The variations and combinations of the genes we accept as normal make such an enormous number that the universe won’t last long enough to see every possibility realized. So we get the strong and the feeble, the wise and the foolish, ad infinitum. Besides, Zachary understood that that optimum human is unspecialized, is excellent at doing most things but not apt to be the absolute champion at any one of them.
“What is the optimum, except the type which can flourish under the widest possible range of conditions? Zachary acquired a female associate, Yukiko Nomura, who influenced his thinking. She may be responsible for the considerable proportion of Mongoloid traits in us. For example, the eyefold is useful in dry, cold, windy climes, and does no harm in others. By way of contrast, a black skin is ideal in the tropics of Terra under primitive conditions, or today on a planet like Nyanza; and it does not prevent its owner from settling in a different environment; but it does require more dietary iodine than a lighter complexion, and iodine shortages are not uncommon in nature. I could go on, but no matter now. And I admit that a number of the choices were arbitrary, perhaps on the basis of personal preference, when some choice had to be made.
“In the end, after years of labor and frequent failure, Zachary and Nomura put together the cell that became ancestral to us. It is not true what a derogatory legend says, that they supplied all the DNA. Their purpose was too grand for vanity. What they gave of their own was that small fraction they knew to be suitable. The rest they got elsewhere, and nearly everything underwent improvement before going into the ultimate cell.
“That cell they then caused to divide into two. For one X chromosome they substituted a Y, thus making the second cell male. They put both in an exogenetic apparatus and nurtured them to term. The infants they adopted, and raised to maturity and their destiny. Those were Izanami and Izanagi, mother and father of the new race.
“Ever afterward, we have guarded our heritage.”
There was a long silence. Man and girl left the street for a road that swung out between trees and estates, toward the western promontory. Patricius declined, its light going tawny. The wind blew cooler, with a tang of salt.
“And you marry only amongst yourselves?” Diana asked finally.
“Yes. We must, or soon cease to be what we are. Permanent union with an outsider means excommunication. M-m—this is not boastfulness, it is realism—we do consider our genes a leaven, which we are glad to provide to deserving members of the general species. You are a rather extraordinary young lady, yourself.”
Her face heated. “And not yet ready for motherhood, thanks!”
“Oh, I would never dream of distressing you.”
She switched the subject back in a hurry. “Doesn’t inbreedin’ make for defective offspring?”
“Not when there are no defects in the parents. As for the inevitable mutations, tests for those are routine, early in pregnancy. You may find our noninvasive DNA-scanning technique interesting. The equipment for it is an export of ours, but protective restrictions on trade have kept it out of the inner Empire. No clinic on Imhotep has felt it could afford the cost.”
Diana grimaced. “And any embryo that isn’t ‘perfect’ you—terminate, is that the nice word?”
“As a matter of fact, seldom; only if the prospects for a satisfying life are nil. True, the mother usually elects to have the zygote removed. But it’s brought to term externally … or in the womb of an ordinary Daedalan volunteer. We always find couples eager to adopt such a baby. Remember, it’s not born with any serious handicap; as a rule, nothing undesirable is evident at all. It’s still a superior human being. It is simply not a Zacharian.”
“Well, that’s better.” Diana shook her head and sighed. “You’re right, this is an almighty peculiar place. How’d it get started, anyway?”
Kukulkan scowled. “What the Founders did not foresee was the effect of an unpleasant characteristic of the species; and before you point this out yourself, I concede that Zacharians aren’t free of it either. Perhaps, if we had had the upper hand, we would have developed into an oppressive master caste. As it was, we were a tiny minority, inevitably but annoyingly exclusive. Astarte Zachary, let us say, might be a loyal shipmate of Pierre Smith; she might take him for a lover; but never would she consider marrying him, or his brother, or anybody except a fellow Zacharian. The reasons were plain, and they were … humiliating. The ordinaries retaliated, more and more, with exclusionism of their own. Here and there, discrimination turned into outright persecution. ‘Incest’ was almost the least ugly of the words thrown at us. The collapse of the Polesotechnic League removed the last barrier against intolerance—not individual intolerance, which we could deal with, but institutionalized intolerance, discriminatory laws in society after society. Many among us found it easier to give up the struggle and merge into the commonality. The need for a homeland became ever more clear.