It seems like we're living in an epidemic of false belief. Clearly the other side just doesn’t have all the facts, right? Or are they really that stupid? In this fascinating and hilarious talk, cognitive scientist Philip Fernbach peels back the layers of what we really know and reveals some surprising truths about the human mind. Philip Fernbach is a cognitive scientist and professor in the Leeds School of Business at the University of Colorado, Boulder. Co-author of The Knowledge Ilusion: Why We Never Think Alone, Philip's research focuses on why we think we know more than we actually do and the implications this has on individuals and society. He lives in Boulder with his wife and two children. In his free time, he plays bluegrass music and ice hockey. This talk was given at a TEDx event using the TED conference format but independently organized by a local community.