Which models are the most reliable? Well, obviously, the models that come from hard science and engineering are the most reliable models on this eart… - Charlie Munger

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Which models are the most reliable? Well, obviously, the models that come from hard science and engineering are the most reliable models on this earth. And engineering quality control — at least the guts of it that matters to you and me and people who are not professional engineers — is very much based on the elementary mathematics of Fermat and Pascal: It costs so much, and you get so much less likelihood of it breaking if you spend this much. It’s all elementary high school mathematics.