In this discussion, Randolph Cohen, a senior lecturer at Harvard Business School known for his insights on finance, and Michael Green, former chief strategist at Logica Capital Advisors, dive into the implications of passive investing. They address the potential risks posed by index funds and target date funds on market stability. The duo debates market efficiency, price elasticity, and the societal consequences of wealth concentration, all while exploring how these dynamics might shape the future of investment strategies and individual investor behavior.