Effective Rationality For several years, Munger, ever the philosopher, has been promoting the idea that we should all employ an interdisciplinary approach to solving human problems. By learning the primary models in each major discipline (such as compound interest and probability in math and break-points and back-up systems in engineering) and applying all of them, he asserts that people will make better decisions. In particular, the errors created from overusing any one model (“for the man with the hammer, every problem looks like a nail”) can be avoided. As an example, Munger discussed the
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