b. 1954
Cass R. Sunstein (born 1954) is an American legal scholar and professor at Harvard Law School, widely regarded as one of the most cited legal scholars in the United States. He is best known for his foundational contributions to behavioral law and economics, regulatory theory, and deliberative democracy, and for co-developing 'nudge theory' with economist Richard Thaler.
Co-developed nudge theory with Richard Thaler, reshaping public policy design worldwide
Served as Administrator of the White House Office of Information and Regulatory Affairs (2009–2012) under President Obama
Pioneered the application of behavioral economics and cognitive bias research to legal and regulatory frameworks
Developed the concept of 'availability cascades' to explain how risk perception distorts democratic deliberation
Authored 'Republic.com' and related work on the internet's threat to deliberative democracy through echo chambers