As a researcher, every once in a while you encounter something a little disconcerting. And this is something that changes your understanding of the world around you, and teaches you that you’re very wrong about something that you really believed firmly in. And these are unfortunate moments, because you go to sleep that night dumber than when you woke up. So, that’s really the goal of my talk, is to A, communicate that moment to you and B, have you leave this session a little dumber than when you entered. So, I hope I can really accomplish that. – Sendhil Mullainathan

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