来自《耶鲁大学开放课程：金融理论 第13集 第13集》

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  Leibniz was the one who first invented the idea of states of the world.
  Leibniz是第一个提出界状态概念的人
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  He said, "We live in the best of all possible worlds."
  他认为 我们活在最好可能性的世界里
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  So if you don't know what's going to happen in the future,
  所以如果你不知道未来会发生什么
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  we're going to represent that as many potential states of the world.
  我们给出能想到的可能的界状态
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  Now there are other ways you could model uncertainty,
  现在有其他一些不确定性的模型
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  and it's a big subject in epistemology and philosophy.
  这是认识论和哲学的主要课题
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  I'm going to stay--hew closely to the states of the world thing.
  我要说的是 严格遵守界状态
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  So if there's something about the world we don't know tomorrow,
  所以如果未来有什么我们不知道的
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  I'm not going to assume that it's just vague in our minds
  我不会假设 它只是我们想不清楚的
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  and we can't quite make it out.
  我们无法表述出来
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  I'm going to assume you actually can make it out.
  我会假设你们都做得出来
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  It's just you don't know which of the possibilities
  只是不知道其中哪一个可能性