资本资产定价模型并非旨在描述投资者实际行为的实证理论,而是关于理性投资者应如何行事的规范理论。
The best fruits come from patience, care, and respect for nature's timing.
The leather industry must evolve or risk becoming obsolete.
宝剑干将虽然锋利无比、名闻天下,但是,木匠用它伐树却比不上斧头。点评:方法不对,适得其反。