AI will be the defining issue of the twenty-first century, but many people know little about it apart from visions of dystopian robots or flying cars. Though the term has been around for half a century, it is only now, Kai-Fu Lee argues, that AI is poised to upend our society, just as the arrival of technologies like electricity and smart phones did before it. A groundbreaking blend of science and imagination from the former president of Google and a leading writer of speculative fiction.