In breathtakingly original prose, Elise Bohan argues that we're hurtling towards a superhuman future—or, if we blunder, extinction. The only way out of our existential crises, from global warming to the risks posed by nuclear weapons, novel and bioengineered pathogens, and unaligned AI, is up. We'll need more technology to safeguard our future—and we're going to invent (and perhaps even merge with) some of that technology. What does that mean for our 20th century life-scripts? Are the robo...