This is not the time or place to thank all the people that contributed to me winning this prize, especially but not limited to all my co-authors. We all know this was a team effort. For help preparing this written version of my lecture special thanks for useful comments go to Stefano DellaVigna, Raife Giovinazzo, Alex Imas, Emir Kamenica, Kristy Kim, and, as usual, Linnea Gandhi was indispensable.