Yale economist William Goetzmann says investors are generally too worried about a market crash. His research shows crashes after big surges are rare and often short-lived. Goetzmann advises staying invested long-term for better returns, despite market fears. Yale economist William Goetzmann has felt the fear that a stock-market crash can strike into an investor. He's lived through at least four of them: 1987, 2000, 2008, and 2020. "I watched my entire life savings drop by 50% during the crash of 2 ...