A talk with psychologist Leonard Saxe, who is known for, amongst other things, his research into lie detectors (also known as polygraphs). Topics discussed include: why polygraphs and other forms of deception detection are unreliable; the use of polygraphs as a tool to extract information and confessions; the Richard Ames case, which involved a high-level CIA employee spying for the Soviet Union and beating a polygraph when questioned; a story where someone’s life was ruined due to cops trusting polygraph evidence far too much; and more.