Does anybody really know how a pen works? (with Steve Sloman)

Humans have built hugely complex societies and technologies, but most of us don't even know how a pen or a toilet works! How have we achieved so much despite understanding so little? In this episode, David Yokum sits down with Steve Sloman, author of The Knowledge Illusion and Professor of Psychology at Brown University to discuss the extensive research on the cognitive biases that convince us we know more than we do.