The tool is cool, but be wary of the theory, and fantasies are real only in your dreams.
tool: it is possible to build stock porfilo that have the lowest possible risk, given your objective for the expected return, using the efficient frontier.
theory: capital asset pricing model
fantasy: efficiency market
这句话是haugen 的new fiance：the case aganist efficient market.
老师让我写篇essay问说同意这句话还是不同意 真的毫无头绪啊~~请高人指点该怎么下笔呀~~