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Like many World War II stories, the story of Abraham Wald starts with the Nazis hounding a Jew out of Europe and ends with the Nazis regretting it. As it turned out, Abraham’s work as a mathematician with American generals during the war involved a phenomenon called survivorship bias. Once you understand how he solved the bullet hole problem in planes, you’re primed to notice survivorship bias wherever it’s hiding. Just like Jordan Ellenberg's book, this video tells you how not to be wrong.…more