Dan Ariely is a superstar TED talker and a world-leading social psychologist, specialising in the study of irrational behaviour and bad decisions. His new book Misbelief is a guide to why some people adopt conspiratorial beliefs and how the rest of us can help rather than make things worse - and offer advice to help us reduce our own susceptibility to such beliefs. He joined the podcast to share his insights. Learn more about your ad choices. Visit podcastchoices.com/adchoices