Which of these should you believe and which should you doubt? Old people aren’t interested in sex. Money can’t buy happiness. You can believe media reports of medical breakthroughs. Lie detectors work. We only use 10% of our brains. ESP is real. Some people are born gay. Hypnosis is powerful. We repress bad memories. Examine these and more with Dr. Gordon Hammerle, adjunct professor at Siena Heights University and professor emeritus at Adrian College, and there may be some surprising answers.