最终,我们将记住的不是敌人的话语,而是朋友的沉默。
当且仅当所有投资者都持有均值-方差有效的投资组合时,市场组合才是有效的。
Data is the new oil. It's valuable, but if unrefined it cannot really be used. It has to be changed into gas, plastic, chemicals, etc to create a valuable entity that drives profitable activity; so must data be broken down, analyzed for it to have value.