From Cass R. Sunstein and Richard H. Thaler, winner of the Nobel Prize in Economics, Nudge is one of the most influential books of the 21st century *Fully revised and updated from cover to cover* Since the original publication of Nudge more than a decade ago, the word has entered the vocabulary of businesspeople, policy makers, engaged citizens and consumers everywhere. The book has given rise to hundreds of "nudge units" in governments around the world and countless groups of behavioural scientists in every part of the economy. It has taught us how to use thoughtful choice architecture to help us make better decisions for ourselves, our families, and our society. Now, Richard Thaler and Cass Sunstein have updated the book, making use of their experiences in and out of government over the past dozen years as well as an explosion of new research. This final edition offers a wealth of new insights, for both its avowed fans and newcomers, about a wide range of issues that we face in our daily lives -- health, personal finance, climate change, and "sludge" (paperwork and other nuisances we don't want, and that keep us from getting what we do want) -- all while honouring one of the cardinal rules of nudging: make it fun!