Suppose you could find 10,000 independent assets, then you could drive the uncertainty about the portfolio practically to 0.

假设你能找到一万项相互独立的资产，那么你就可以将这个投资组合的风险,降到几乎为零。

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That's because, at the end, if- -suppose you're one month or two months away from the payoff of the mortgage, you don't have any balance left, so the interest that you're paying is -hardly any balance left--is very low and so you're payment is paying off principal, mostly.

这是因为,在最后,如果,假设你还剩1到2个月,就可以还清抵押贷款,那么剩下的贷款余额就很少了,因此你所需要付的利息,将会非常少,因为贷款余额几乎为零,此时你偿还的就主要是本金

耶鲁公开课 - 金融市场课程节选