Have you ever been confronted with the fact that you were in over your head, or that you had no idea what you were doing, or that you thought you were more skilled at something than you actually were? At its most extreme, this is called the Dunning-Kruger effect - the fact that it is very easy to be both unskilled and unaware, and in this episode we explore how it works and where you might expect to see it your own life.