Inversion

Up is down. Well that’s just maddeningly unhelpful. Why are these things never clear?

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Over the summer, I came across several posts that talked about a mental model known as The Inversion principal. It’s based on a simple tenet from the German mathematician Carl Jacobi — ‘invert, always, invert’ that he used to solve the most complicated problems he faced.

The idea is as follows….

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