Of course, if think about it, as a community, the investment community is going to lose from security selection decisions.

其实很好理解,想想看,投资者群体可能,由于证券选择决策失误而蒙受损失

耶鲁公开课 - 金融市场课程节选

So, it's not surprising that asset allocation explains more than 100% of returns and that, for the community as a whole, market timing and security selection are costly and lower the community's aggregate investment returns.

因此资产配置能解释100%以上的回报,也不足为奇了,对投资者整体来说,市场时机选择,和证券选择是有代价的,降低了总的投资回报

耶鲁公开课 - 金融市场课程节选