传统经济时代,一切的生意源于信息不对称。美国经济学家约瑟夫·斯蒂格利茨、乔治·阿克尔洛夫和迈克尔·斯彭斯曾经共同提出:在市场经济活动中,各类人员对有关信息的了解是有差异的。掌握信息比较充分的人员,往往处于比较有利的地位,而信息贫乏的人员则处于比较不利的地位。掌握更多信息的一方可以通过向信息贫乏的一方传递可靠信息而在市场中获益。这就是著名的信息不对称理论,也是通常百姓口中所说的“买的没有卖的精”。但是,互联网的出现改变了这一切。互联网是一张 In the traditional economic era, all business originates from information asymmetry. American economists Joseph Stiglitz, George Akerlof and Michael Spence have jointly proposed: In the course of market-oriented economy, all kinds of people have different understanding of the relevant information. People with more adequate information tend to be at a more favorable position, while those with poor information are at a disadvantage. A party with more information can benefit from the market by passing reliable information to the less-informed one. This is the famous Theory of Information Asymmetry, which is also commonly referred to by the people. However, the advent of the Internet has changed all this. The internet is a