Duke’s Dan Ariely returns with a discussion and book signing of his new book, The Upside of Irrationality: The Unexpected Benefits of Defying Logic at Work and at Home.   Author of Predictably Irrational, Ariely is the James B. Duke Professor of Behavioral Economics at Duke, the founder of the Center for Advanced Hindsight, and a visiting professor at MIT’s Media Lab.  He has appeared on CNN and CNBC, and is a regular commentator on NPR.