When you look at this theory, you realize that it suggests a very important technology for improving human welfare and by spreading risks.

这一理论，提出了一个重要的技术,即可以通过分散风险，提高收益。

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For any given level of return, you can reduce the risk; for any given level of risk, you can increase the return; sounds pretty good.

给定回报率,可以降低风险,给定风险水平,可以提高回报率,听上去不错

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And so you can see here now you're not just getting relative risks of two, three, or four but you're getting relative risk of a hundred, in this case, massively elevated risk.

可以看出,肥胖人群的患病风险不只高出了三四倍,而是上百倍,风险极大地提高了

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You'd have a higher expected return with no more variance.

你的预期收益率提高了，但风险没有增加。

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