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。

耶鲁公开课 - 金融市场课程节选

In this simple world, n or whatever you could.

在这个简单的假设中，取100或者1000，you'd，want，to，make，n，100，or，1，000,任意数值都可以。

耶鲁公开课 - 金融市场课程节选