Timely, highly informative, and certainly optimistic. * Booklist * Reese frames the deepest questions of our time in clear language that invites readers to make their own choices. Using 100,000 years of human history as his guide, he explores the issues around artificial general intelligence, robots, consciousness, automation, the end of work, abundance, and immortality. As he does so, Reese reveals himself to be an optimist and urges us to use technology to build a better world. -- Bob Metcalfe, UT Austin Professor of Innovation, Ethernet inventor, 3Com founder In The Fourth Age, Byron Reese offers the reader something much more valuable than what to think about Artificial Intelligence and robotics-he focuses on HOW to think about these technologies, and the ways in which they will change the world forever. If you only read just one book about the AI revolution, make it this one. -- John Mackey, co-founder and CEO, Whole Foods Market