Xenocide (Ender Wiggins Saga)

descolada must do the drifting. It could, couldn't it? It could change the genes of a whole species, even while the species is still alive. It wouldn't have to wait for evolution."
    There was a pause again, with Jane holding up her hand. She must be showing Wang-mu's face to Ela, letting her hear Wang-mu's words from her own lips.
    " Nossa Senhora ," whispered Ela. "On this world, the descolada is Gaia. Of course. That would explain everything, wouldn't it? So few species, because the descolada only permits the species that it has tamed. It turned a whole planetary gaialogy into something almost as simple as Daisyworld itself."
    Wang-mu thought it was almost funny, to hear a highly-educated scientist like Ela refer back to Daisyworld, as if she were still a new student, a half-educated child like Wang-mu.
    Another face appeared next to Ela's, this time an older Caucasian man, perhaps sixty years old, with whitening hair and a very quieting, peaceful look to his face. "But part of Wang-mu's question is still unanswered," said the man. "How could the descolada ever evolve? How could there have ever been proto-descolada viruses? Why would such a limited gaialogy have survival preference over the slow evolutionary model that every other world with life on it has had?"
    "I never asked that question," said Wang-mu. "Qing-jao asked the first part of it, but the rest of it is his question."
    "Hush," said Jane. "Qing-jao never asked the question. She used it as a reason not to study the Lusitanian documents. Only you really asked the question, and just because Andrew Wiggin understands your own question better than you do doesn't mean it isn't still yours."
    So this was Andrew Wiggin, the Speaker for the Dead. He didn't look ancient and wise at all, not the way Master Han did. Instead this Wiggin looked foolishly surprised, the way all round-eyes did, and his face changed with every momentary mood, as if it were out of control. Yet there was that look of peace about him. Perhaps he had some of the Buddha in him. Buddha, after all, had found his own way onto the Path. Maybe this Andrew Wiggin had found a way onto the Path, even though he wasn't Chinese at all.
    Wiggin was still asking the questions that he thought were Wang-mu's. "The odds against the natural occurrence of such a virus are-- unbelievable. Long before a virus evolved that could link species together and control a whole gaialogy, the proto-descoladas would have destroyed all life. There wasn't any time for evolution-- the virus is just too destructive. It would have killed everything in its earliest form, and then died out itself when it ran out of organisms to pillage."
    "Maybe the pillaging came later," said Ela. "Maybe it evolved in symbiosis with some other species that benefited from its ability to genetically transform all the individuals within it, all within a matter of days or weeks. It might only have extended to other species later."
    "Maybe," said Andrew.
    A thought occurred to Wang-mu. "The descolada is like one of the gods," she said. "It comes and changes everybody whether they like it or not."
    "Except the gods have the decency to go away," said Wiggin.
    He responded so quickly that Wang-mu realized that Jane must now be transmitting everything that was done or said instantaneously across the billions of kilometers of space between them. From what Wang-mu had learned about ansible costs, this sort of thing would be possible only for the military; a business that tried a realtime ansible linkup would pay enough money to provide housing for every poor person on an entire planet. And I'm getting this for free, because of Jane. I'm seeing their faces and they're seeing mine, even at the moment they speak.
    "Do they?" asked Ela. "I thought the whole problem that Path was having is that the gods won't go away and leave them alone."
    Wang-mu answered with bitterness. "The gods are like the descolada in every way. They destroy anything they don't like, and the people they do like they transform into something that they never were. Qing-jao was once a good and bright and funny girl, and now she's spiteful and angry and cruel, all because of the gods."
    "All because of genetic alteration by Congress," said Wiggin. "A deliberate change introduced by people who were forcing you to fit their own plan."
    "Yes," said Ela. "Just like the descolada."
    "What do you mean?" asked Wiggin.
    "A deliberate change introduced here by people who were trying to force