There’s an old joke that goes “What’s the difference between a used car salesman and [insert any type of salesman, consultant, agent or other professional ‘persuader.’? A. The used car salesman knows when he’s lying.”
They had reputations as two-faced liars, swindlers, and scam artists. The “used car salesman” has been the butt of many jokes and even the inspiration for characters in movies and TV shows. Remember Mr. Beauregard in Willy Wonka and the Chocolate Factory? Or Robin Williams....