The Number One international bestseller featuring contributions from Daniel Kahneman, Dan Ariely, Ryan Holiday, Alison Gopnik, Howard Gardner, Antonio Damasio, and Aaron James. 'We need books like this one'Steven Pinker. Stupidity is all around us, from the colleagues who won't stop hitting 'reply all' to the former school friends posting conspiracy theories on Facebook. But in order to battle idiocy, we must first understand it. In The Psychology of Stupidity, some of the world's leading psychologists and thinkers - including a Nobel Prize winner  will show you.