Interview with Dr Gad Saad, a well-known evolutionary psychologist, teaching  at Concordia University's John Molson School of Business.   Saad's works include "The Consuming Instinct: What Juicy Burgers,  Ferraris, Pornography, and Gift Giving Reveal About Human Nature," as  well as "The Evolutionary Bases of Consumption" and "Evolutionary  Psychology in the Business Sciences."  Saad is also an outspoken critic of both religion, and the culture of  political correctness.