The rational expectations hypothesis does not imply that people forecast the future perfectly; it implies that they do not make systematic errors.
理性预期假说并不意味着人们能完美预测未来;它意味着人们不会犯系统性错误。
一个人只要能够生活就感到满足的话,他就会生活的很愉快。我们愈不知道忍受,我们愈感到痛苦。
I write to understand what cannot be understood.
能源的未来取决于我们的创新能力。