Manifold: Time 
Manifold: Time's would-be asteroid-miner-in-chief is bootstrap space entrepreneur Reid Malenfant, a media-savvy firebrand who's showed those crotchety NASA folks what's what with his ready-to-fly Big Dumb Booster, piloted by a genetically enhanced super-squid. But Malenfant's near-term plans to exploit the asteroids get diverted when he crosses paths with creepy mathematician and eschatologist Cornelius Taine. Applying Bayes's theorem and a series of other statistical do-si-dos, Taine convinces Malenfant that an inescapable extinction event--the "Carter catastrophe"--is nigh, and that even working to colonize the galaxy might not be enough to save humanity. The answer: build a Feynman "radio" to listen to the future and, by detecting coded quantum waves traveling back through time, divine the fate of human "downstreamers" and find the key to their survival. Space flight, time travel, and even squid negotiations ensue, while Earth is gripped in Last Days madness.
Once again, the award-spangled Baxter gives us sci-fi at its beard-stroking best, with an imaginative, audacious plot line that's firmly grounded in good science, reminiscent of Baxter's own excellent Vacuum Diagrams. --Paul Hughes
Reviews
Manifold: Time has some other very interesting scientifically based arguments to make concerning the short-term survivability of humanity on earth. A look at the bibliography at the end of the book demonstrates how strongly hard-science based this book really is. Less hard science, but a lot of fun, is Baxter's use of augmented squids to "man" space flights.
For all these positives, Manifold: Time unfortunately also has some major faults. Baxter asks a lot of big questions, and the various outcomes he envisions might be correct. But the people that populate Manifold: Time are not up to the task: they never have enough depth in character or in numbers to match the questions posed. And Baxter is too secular with the story; religion and faith might not have the answers, but humanity would force them to have a much bigger part (both positive and negative) than portrayed in this book. Baxter's presentation feels incomplete and somewhat sterile.
The key to Manifold: Time and whether you might enjoy it is cosmology and time. For many, the science may go overboard, and the flawed character development and negatively sterile view of humanity might disappoint. But if you are intrigued by scifi extrapolations about the beginning and end of the universe, and find time paradoxes fun to contemplate, then you will surely enjoy Manifold: Time.
What? Another sentient ship? No, it turns out to be a sentient squid! Her part of the story is interesting, but not as involving as HAL-9000. In "2001" a giant black monolith sparks intelligence in pre-humans. In "Time" a big blue cylinder sparks superintelligence in humans. Both function as portals, according to the programming. Although not necessarily in the same order, in each the main characters are taken by their respective portals, placed in a virtual motel rooms, turned into advanced programs, and given a grand tour of creation.
I would not discourage someone from borrowing this from the library, as I did, if they have the time, it has its merits, but you could read "2001," "2010" and "The Last Question" by Isaac Asimov in less time and get much more story.
