Thus the first five children of Aïda. She had, however, been unable to employ the same strategy vis-à-vis Moira, for the basic reason that Moira knew exactly what Aïda was doing, down to the specific DNA base pairs that had been altered in her ova. If this were a game, then Eve Moira always had the last move. The failures of her first eight pregnancies had only deepened the mystery. Since she had never articulated her choice, no one really knew what she had done, which made Moirans an enigmatic race, not only to the other races, but to themselves. But it was plainly the case that Moirans were the only race capable of "going epi." Kath Two’s genome, like that of every other life-form, was fixed. A copy of it lived in every cell in her body. But which of those genes were being expressed at a given time, and which were lying dormant, was changeable to a degree far beyond what humans were normally capable of. It would have amounted to a kind of superpower, had there been a way to control it. But, certain hoary old legends to the contrary, there wasn’t. Kath Two never knew when she might fall asleep for a week and wake up a different person named Kath Three. Sometimes the results were brilliant. Rarely they were fatal. Sometimes they were inconvenient, or downright embarrassing. Most of the latter cases had something to do with what happened, like it or not, when a Moiran fell in love. In any case, this was the choice that Eve Moira had made and the gift she had conferred on her daughter, Cantabrigia. And it was assumed that she had done so because she believed that this degree of plasticity would somehow bring the world back into balance against the choices that Aïda had been making.