每日原则：避免“事后诸葛亮”
评价过去一项决策的好坏，不要根据现在新得知的情况，而要根据决策时能够合理了解的情况。每个决策都有利有弊，你不能不考虑当时情境就对过去的决定妄加判断。你要问自己：“在那种情境下，具备一定素质的人会了解什么和做什么？”同时，还应当深入了解做出决定的人（他们的思维方式是什么，他们是什么类型的人，他们从中学到了什么吗，等等）。
Evaluate the merits of a past decision based not on what you know now but only on what you could have reasonably known at the time the decision was made. Every decision has pros and cons; you can't evaluate choices in retrospect without the appropriate context. Do this by asking yourself, "What should a quality person have known and done in that situation?" Also, have a deep understanding of the person who made the decision (how they think, the type of person they are, whether they learned from the situation, and so on).
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《每日原则》为瑞·达利欧(Ray Dalio) 原创，
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