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The capital asset pricing model (CAPM) is a useful tool for understanding the risk-return tradeoff, but it is not a perfect description of reality.
资本资产定价模型(CAPM)是理解风险-回报权衡的有用工具,但它并非对现实的完美描述。
The true essence of scientific discovery is not in the answers it provides, but in the new questions it raises.
年轻人不知道什么是谨慎,因此他们尝试不可能的事情——并且一代又一代地实现了它。