Have you ever avoided stepping on a crack, just in case you might break your mother’s back? Every day, people make decisions and act based on completely unfounded ideas and superstitions – even when they acknowledge that there is no evidence to support their reasoning. Why do we so often engage in this kind of magical thinking? What could cause otherwise rational people to believe outlandish things? Are we as rationally motivated as we might think? John and Ken share some magic with Michael Shermer, author of Skeptic: Viewing the World with a Rational Eye.