我的想法
由于孙老师给的一个例题（15.8）涉及到的这个，故觉得应该引起重视。
The lemons market, 中文名叫做 柠檬市场，比较典型的就是二手车市场
它的局限性是否在于二手市场相同品类的物品价格不变？
If there is a used car market, and full of high quality cars and low quality cars, and of course the buyers and sellers have a Asymmetric Information relationship, so that consider the buyer do not know whether the car is good or not, so they can only choose to prefer the average price, for example
Where peach refers to good cars, lemon refers to bad cars here means the cost（成本）not the price
However, the seller knows their car is lemon or peach, so that only if
The deal could happen.
So after repeated games, the result would be the quality of cars would continuously decrease and the high quality will get out of the market. ( Because the seller don’t want to make the deal) This procedure is called market unraveling
Other Applications:
- Online shopping: Are the shoes a knockoff? （廉价仿制品）
- Car insurance: Is the person buying insurance cautious or reckless?
- Job Market: Is the employee you hire diligent or lazy?
How to fix lemon market problem?
Reference
tc low property rule better
Tc high liablity rule better