The celebrated author of Against the Gods: The Remarkable Story of Risk explores the history of risk and how it works in real-world markets and in our lives.

Risk doesn’t mean danger—it just means not knowing what the future holds. That insight resides at the core of risk management for companies, whether in managing the potential downside of an investment or putting a value on the option of waiting when making irreversible decisions. In this video Peter L. Bernstein also explains why in the real world the most sophisticated mathematical models can sometimes fail.