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Nudge is about choices—how we make them and how we can make better ones. Authors Richard H. Thaler and Cass R. Sunstein offer a new perspective on preventing the countless mistakes we make— including ill-advised personal investments, consumption of unhealthy foods, neglect of our natural resources, and other bad decisions. Citing decades of cutting-edge behavioral science research, they demonstrate that sensible “choice architecture”can successfully nudge people towards the best decisions without restricting their freedom of choice. S straightforward, informative, and entertaining, this is a must-read for anyone with interest in our individual and collective well-being.

想一想，你是不是跟比较胖的朋友在一起会吃得尤其多？是不是在“建议捐款数额50元”比“建议捐款数额为100元”时少捐不少？是不是明知道用不上，还是会在买家电时购买“保修延长”的服务？
毫不夸张地说，选择是人生中最重要的事。
小到早餐吃煎饼油条还是麦当劳，大到婚姻对象、个人投资、子女择校方案的选择，任何一个选择都有可能改变你的人生轨迹。
但是，我们往往深陷难以计数的偏见和非理性中，做出荒谬的选择。因此，我们需要学点聪明的行为经济学，帮助我们做出最有利的选择。
政府需要行为经济学对政策进行优化设计，引导人们在教育、投资、卫生保健、抵押贷款及环境保护等领域做出更健康、更富有、更快乐、对社会乃至全球最有助益的选择。
什么是“助推”？
不用强制手段，不用硬性规定。却能保证你同时收获“最大利益”和“自由选择权”。这股轻轻推动你做出最优选择的力量，就是“助推”。
颁布法令禁止食用垃圾食品不算“助推”，把鲜脆欲滴的新鲜水果以低廉的价格方便地呈现在人们眼前，让人们主动选择健康食物，才是“助推”。

Richard Thaler challenges the received economic wisdom by revealing many of the paradoxes that abound even in the most painstakingly constructed transactions. He presents literate, challenging, and often funny examples of such anomalies as why the winners at auctions are often the real losers - they pay too much and suffer the "winner's curse" - why gamblers bet on long shots at the end of a losing day, why shoppers will save on one appliance only to pass up the identical savings on another, and why sports fans who wouldn't pay more than $200 for a Super Bowl ticket wouldn't sell one they own for less than $400. He also demonstrates that markets do not always operate with the traplike efficiency we impute to them.