Can you predict the future? Or at least gauge the probability of political or economic events in the near future? Philip Tetlock of the University of Pennsylvania and author of Superforecasting talks with EconTalk host Russ Roberts about his work on assessing probabilities with teams of thoughtful amateurs. Tetlock finds that teams of amateurs trained in gathering information and thinking about it systematically outperformed experts in assigning probabilities of various events in a competition organized by IARPA, research agency under the Director of National Intelligence. In this conversation, Tetlock discusses the meaning, reliability, and usefulness of trying to assign probabilities to one-time events.