When a man pointed to paintings of sailors saved by prayer, the ancient philosopher Diagoras of Melos asked a devastating question: where are the pictures of those who prayed but drowned? That question exposes survivorship bias, a statistical distortion in which we study only the entities that passed a selection filter and forget the invisible failures that were erased. This deep dive traces the concept from ancient Greece to World War II, where statistician Abraham Wald of the Statistical Research Group told the military to armor the parts of returning bombers that had no bullet holes, because the planes hit there never came home.

We then follow the bias into modern life: the college dropout billionaire narrative, Nassim Taleb's silent evidence, the 2013 finding that 91 percent of music artists remain undiscovered, and how historians overw ...