from the back of the book:
A postmodern visionary who is also a master of styles and genres, David Mitchell combines flat-out adventure, a Nabokovian love of puzzles, a keen eye for character, and a taste for mind-bending philosophical and scientific speculation in the tradition of Umberto Eco and Philip K. Dick. The result is brilliantly original fiction how disparate people connect, how their fates intertwine, and how their souls drift across time like clouds across the sky.
A.S. Byatt wrote the review in The Guardian and says, "Trust the tale. He reaches a cumulative ending of all of them, and then finishes them all individually, giving a complete narrative pleasure that is rare." Salon.com calls it "a genuine and thoroughly entertaining literary puzzle." The New York Times says,
It is a devious writer indeed who writes in such a way that the critic who finds himself unresponsive to the writer's vision feels like a philistine. So let it be said that Mitchell is, clearly, a genius.... The novel is frustrating not because it is too smart but because it is not nearly as smart as its author.