So I think it becomes clear that even if we want to reduce our regional profile, an issue like the Yemen issue makes it clear that this is not possible,"
VOA: standard.2010.03.18
And so it's not, perhaps, crippling if this is the conclusion we reach, but at the same time it's not the only possible conclusion.
因此,如果这就是我们的结论,也没有太大关系,但同时要知道这不是惟一可能的结论。
Once again I wouldn't be teaching this class, if I didn't change is possible.
如果我认为没有改变的可能,就不会教这节课。
So, the optimal thing to do if you live in a world like this n is to get n as large possible and you can reduce the standard deviation of the portfolio very much and there's no cost in terms of expected return.
如果现实中也这样简单的话,那么你就尽量增大,这样就能让投资组合的标准差,就会大大降低,从预期收益率的角度来看,这样做的成本是零。
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