In the Internet age, information is commodity and information is value. Every innovation of the network is to break the information monopoly, eliminate information discrimination and create new markets.
In real life, information asymmetry and communication barriers can be seen everywhere, and information owners and users have different natural status. The so-called buyer is not as good as the seller, but the merchant has mastered all the information of the goods and is in an advantageous position. They can conceal or deliberately fabricate information, sell goods as soon as possible, and make huge profits from them. Because of this, in an incomplete market economy society, there are many fake and shoddy goods, and counterfeiting and selling fakes are so rampant.
The asymmetry of information is particularly obvious in the second-hand market. For example, in the second-hand car market, as a consumer, you are always afraid of being cheated. Being at an information disadvantage, you can't judge the quality of a car just by its shiny appearance. You don't know if the car has an accident, if it has been overhauled, and what's wrong with it. These dealers all know, but in order to sell the car, he may deliberately hide the real information of the car. This information asymmetry makes you hesitate. In the end, you will always choose. In the second-hand car market, good cars are hard to sell, while used cars are relatively easy to make deals.