Real Time with Bill Maher

Guests: An interview with Steven Pinker, professor and author of the forthcoming book "When Everyone Knows That Everyone Knows...: Common Knowledge and the Mysteries of Money, Power, and Everyday Life." This week's panel discussion includes Kaitlan Collins, CNN Chief White House Correspondent and anchor of the weeknight show "The Source with Kaitlan Collins"; and Stephen Moore, senior visiting fellow in economics at The Heritage Foundation and co-author of "Trumponomics: Inside the America First Plan to Revive Our Economy."