Richard Thaler is coauthor, with Cass R. Sunstein, of Nudge: Improving Decisions About Health, Wealth, and Happiness (Yale University Press, 2008). Nudge discusses how public and private organizations can help people make better choices in their daily lives. "People often make poor choices - and look back at them with bafflement!" Thaler and Sunstein write. "We do this because as human beings, we all are susceptible to a wide array of routine biases that can lead to an equally wide array of embarrassing blunders in education, personal finance, health care, mortgages and credit cards, happiness, and even the planet itself." Thaler and his co-author coined the term choice architect.

In this video Professor Thaler discusses theory in economics, how observed human behavior points to anomalies that contradict what theory predicts will happen, and the implications of behavioral economics for public policy including its contribution to understanding the 2008 economic collapse and to shaping future regulation.