This quick TED talk entry is courtesy of TED.com. When two people are trying to make a deal — whether they’re competing or cooperating — what’s really going on inside their brains? Behavioral economist Colin Camerer shows research that reveals just how little we’re able to predict what others are thinking. And he presents an unexpected study that shows chimpanzees might just be better at it than we are. (Filmed at TEDxCalTech.)