"A riveting, beautifully written, fugue-like novel of AIs, memory, violence, and mortality. Not far in the future the seas have risen and the central latitudes are emptying, but it's still a good time to be rich in San Francisco, where weapons drones patrol the skies to keep out the multitudinous poor. Irina isn't rich, not quite, but she does have an artificial memory that gives her perfect recall and lets her act as a medium between her various...