Author Bob Drogin explains how poor information from a taxi driver named Curveball has led to the worst intelligence and foreign policy failure in America's history. (5:10)
Daniel Gilbert talks about his new book and tells Stephen that money doesn't buy happiness, kids are a pain in the ass and marriage and religion will make you happy. (5:55)
Dr. Jerome Groopman discusses "How Doctors Think" and explains that Dr. Gregory House is based on Sherlock Holmes, who was addicted to cocaine, not heroine. (6:07)
Stephen speaks with union leader Andy Stern about insurance and the growing gap between the rich and the poor, and suggests robots as a plan for America's future. (6:36)