今天重新回顾之前的课程材料，看到一个蛮有趣的观点，来自经济与心理的老师。

Previous studies argue that markets where oppotunities to learn and real incentives are provided, play an imprtant role in teaching people to behave rationally, and a role in expeling irrational traders. the lecturer said that markets are also the place where bias and heuristics are encouraged as in the market, individual cannot learn rationally, not being a Bayesian learner. And firms which are experienced agents have little incnetive to debias consumer (they will even use consumers' biases to make money). Third, some bias and heustics are functional and costless. Any commmet is welcomed