Leonard Mlodinow is a physicist, and the author of several books including “The Drunkard’s Walk: How Randomness Rules Our Lives” and “Feynman’s Rainbow: A Search for Beauty in Physics and in Life.” He’s also written for television, including “Star Trek: The Next Generation.” This interview is edited and produced with music and other features in the On Being episode “Leonard Mlodinow — Randomness and Choice.” Find more at onbeing.org.