Abstract：The rationality hypothesis of economic agents is the logic foundation of modern economics.Homo-economics is based on agents' perfect rationality,and agents can attain the maximum object out of all the choices.However,the perfect rationality not only fails to be true,but fails in the logic reason and practical examination.Actually,agents have only bounded rationality on which new institutional economics,evolutionary economics and behavior economics,etc,establish respective system and construct the agents' real choice models.
