Of the three books in the Destiny's Children series, this has turned out to be my favorite. Stephen Baxter has continuously amazed me with his ability to tie complex physics, theories of evolution, and far flug timelines, into a tight and readable story, but this time he has perhaps done more. This is by far his most "human" story. It clings tightly to the suffering of its main character Michael Poole, and digs more deeply than any of his other books into philosophy and the heart of the human condition. Nonetheless it is packed full of Baxter's deep ideas in physics and technology.A very engaging and rewarding book to read for any SciFi fan, and a must for any Baxter fan. He may yet produce his own "Stranger in a Strange Land."