More than ever America is divided into political tribes. One person's truth is somebody else's lie. This show is about confirmation bias and filter bubbles: How our brains play tricks on us as we try to make sense of the world.

David McRaney, the host of the entertaining and popular podcast, "You Are Not So Smart", is our guest. His show is "a celebration of self-delusion." David, who calls himself a psychology nerd, is passionate about the need for all of us to have some understanding of how our brains work. He is the author of two recent books: "You Are Not So Smart" and "You Are Now Less Dumb."