Religions have been studying human behavior for thousands of years - long before science got into the game. And for Christians, the seven deadly sins have offered a moral and social framework to get folks on the straight and narrow. Neuroscientist Jack Lewis says: we can use that framework to inform our future decisions. We talk to Lewis, author of the new book “The Science of Sin: Why We Do The Things We Know We Shouldn’t” about the biological side of this religious list.