How can a small nudge make a big impact? Since publishing the first edition of Nudge more than 10 years ago, Cass Sunstein and Richard Thaler have changed the way businesses and governments design rules and regulations to influence people’s behavior and decision making. Tess Vigeland sat down with Thaler to discuss new material covered in Nudge: The Final Edition, including COVID-19, healthcare, retirement savings, credit card debt, home mortgages, organ donation, climate change, and even “sludge.”