Xenocide (Ender Wiggins Saga)

question again. "What if this is the true picture of the life forms of Lusitania, and how the descolada works within them?"
    "If it were true , then I would have to read and study these documents in order to make any intelligent comment about them. But they aren't true. How far had I taken you in your learning, before you betrayed me? Didn't I teach you about gaialogy?"
    "Yes, Mistress."
    "Well, there you are. Evolution is the means by which the planetary organism adapts to changes in its environment. If there is more heat from the sun, then the life forms of the planet must be able to adjust their relative populations in order to compensate and lower the temperature. Remember the classic Daisyworld thought-experiment?"
    "But that experiment had only a single species over the whole face of the planet," said Wang-mu. "When the sun grew too hot, then white daisies grew to reflect the light back into space, and when the sun grew too cool, dark daisies grew to absorb the light and hold it as heat." Wang-mu was proud that she could remember Daisyworld so clearly.
    "No no no," said Qing-jao. "You have missed the point, of course. The point is that there must already have been dark daisies, even when the light daisies were dominant, and light daisies when the world was covered with darkness. Evolution can't produce new species on demand. It is creating new species constantly , as genes drift and are spliced and broken by radiation and passed between species by viruses. Thus no species ever 'breeds true.'"
    Wang-mu didn't understand the connection yet, and her face must have revealed her puzzlement.
    "Am I still your teacher, after all? Must I keep my side of the bargain, even though you have given up on yours?"
    Please, said Wang-mu silently. I would serve you forever, if you would only help your father in this work.
 
    "As long as the whole species is together, interbreeding constantly," said Qing-jao, "individuals never drift too far, genetically speaking; their genes are constantly being recombined with other genes in the same species, so the variations are spread evenly through the whole population with each new generation. Only when the environment puts them under such stress that one of those randomly drifting traits suddenly has survival value, only then will all those in that particular environment who lack that trait die out, until the new trait, instead of being an occasional sport, is now a universal definer of the new species. That's the fundamental tenet of gaialogy-- constant genetic drift is essential for the survival of life as a whole. According to these documents, Lusitania is a world with absurdly few species, and no possibility of genetic drift because these impossible viruses are constantly correcting any changes that might come up. Not only could such a system never evolve, but also it would be impossible for life to continue to exist-- they couldn't adapt to change."
    "Maybe there are no changes on Lusitania."
    "Don't be so foolish, Wang-mu. It makes me ashamed to think I ever tried to teach you. All stars fluctuate. All planets wobble and change in their orbits. We have been observing many worlds for three thousand years, and in that time we have learned what Earthbound scientists in the years before that could never learn-- which behaviors are common to all planets and stellar systems, and which are unique to the Earth and the Sol System. I tell you that it is impossible for a planet like Lusitania to exist for more than a few decades without experiencing life-threatening environmental change-- temperature fluctuations, orbital disturbances, seismic and volcanic cycles-- how would a system of really only a handful of species ever cope with that? If the world has only light daisies, how will it ever warm itself when the sun cools? If its lifeforms are all carbon dioxide users, how will they heal themselves when the oxygen in the atmosphere reaches poisonous levels? Your so-called friends in Lusitania are fools, to send you nonsense like this. If they were real scientists, they would know that their results are impossible."
    Qing-jao pressed a key and the display over her terminal went blank. "You have wasted time that I don't have. If you have nothing better than this to offer, do not come to me again. You are less than nothing to me. You are a bug floating in my waterglass. You defile the whole glass, not just the place where you float. I wake up in pain, knowing you are in this house."
    Then I'm