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.