We have relied on prophets and seers for most of human history, largely because humans are obsessed with the future – specifically their own. But prophecy has often been used to determine or at least influence the future, not just predict it. In her new book, Prophecy, Carissa Véliz explains the power and perils of prediction, from the Oracle of Delphi to modern AI, giving us some much-needed perspective on the dangers of chatbots and the people who are selling them to us as powerful tools that will either save or doom all of humanity.