Greg's guest today is Dr. Gad Saad who is a Professor of Marketing at Concordia University and former holder of the Concordia University Research Chair in Evolutionary Behavioral Sciences and Darwinian Consumption. He is also the host of The Saad Truth podcast. They discuss his new book, "The Parasitic Mind: How Infectious Ideas Are Killing Common Sense."

Learn more about Dr. Saad: 

Follow Dr. Saad on Twitter: @GadSaad