Can it be rational to believe conspiracy theories? On this episode of Rationally Speaking, Julia and Massimo welcome Prof. Preston Bost, a professor of psychology at Wabash College who investigates what kinds of people latch onto conspiracy theories, and why. The three discuss evolutionary reasons for conspiracy theories' appeal, and ask: how do you determine whether a belief is "rational," anyway?

 Sped up the speakers by ['1.1', '1.0', '1.14']