The development of modern computers and Artificial Intelligence since the middle of the twentieth century is the greatest technological revolution since the invention of writing. This book explains how and why it happened, and what are the likely consequences of an exponential growth in the power of computers and robots - and how we can come to terms with this. Alan Macfarlane, F.B.A., is an Emeritus Professor of Anthropology at Cambridge University and a Life Fellow of King's College. His website is alanmacfarlane.com