Dan Ariely is a professor of behavioral economics at MIT and author of the bestseller, Predictably Irrational: The Hidden Forces That Shape Our Decisions. He was my guest for episode 19 of Books and Ideas. During the interview he explains how his came to study human behavior. He uses examples from his book to explore the question "What makes a good experiment?" He also discusses how he hope that his findings can help strengthen our society despite our human tendency to make "irrational" choices.