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编者按：经济人(希腊语：homooeconomicus)，即假定人思考和行为都是目标理性的，唯一地试图获得的经济好处就是物质性补偿的最大化。常用作经济学和某些心理学分析的基本假设。西方古典经济学中的“经济人”假设，认为人具有完全的理性，可以做出让自己利益最大化的选择。1978年诺贝尔经济学奖得主西蒙修正了这一假设，提出了“有限理性”概念，认为人是介于完全理性与非理性之间的“有限理性”状态。 What happens when people can pick their own price for a product? 买主若能随意定价，将会怎样？ EARLY in the study of economics, students are introduced to Homo economicus, a rough caricature of a human being with an eye to extracting the maximum personal advantage from any given situation. In the real world, of course, human behaviour is much more complicated than that. One example is a pricing strategy called “pay what you want”， in which customers are allowed to choose any price—even zero—for a good. Despite the obvious benefit of getting something for nothing, many people nevertheless choose to pay. The model hit the news in 2007 when Radiohead, a British band, released their album “In Rainbows” on the internet with just such a pricing arrangement。 早期的经济学研究向学生们引介了“经济人”这一概念，讽刺人们处处鹯视狼顾，贪图个人利益的最大化。然而，人们在现实世界中的行为可比这复杂得多了。比方说，一种“随你付”的定价策略允许顾客为商品随意出价，甚至可以不掏钱。虽说明摆着，这种定价策略可以让人们白拿东西，很多人还是会付钱。这种模式在2007年被曝光。当时，英国的电台司令乐队在互联网上发布的专辑《彩虹中》就采用了这一定价安排。 | 
