Many hard problems are best solved when they are addressed backward. Turn a situation or problem upside down. Look at it backward. … Inversion often forces you to uncover hidden beliefs about the problem you are trying to solve.
Charlie Munger – Vice Chairman of Berkshire Hathaway (1924-2023), on a maxim of Carl Gustav Jacob Jacobi (born Jacques Simon, German mathematician, founder of the mathematical and physical seminar in Königsberg; 1804-1851)