Somewhere in the popular imagination there lives a tidy little robot called The Scientific Method. It wears a lab coat, it never guesses, it never sulks, and it grinds out truth by turning a logical crank. Paul Feyerabend spent his life arguing that this robot is a fairy tale—and that the real story of how we come to know things is far stranger, far messier, and far more human than anyone wants to admit.

Anything Goes follows the most provocative philosopher of science of the twentieth century—a former soldier who took three Soviet bullets and walked on crutches for the rest of his days, a man who declared that in science “anything goes”—as our guide through the genuine machinery of discovery. Here is penicillin found in a contaminated dish, uranium glowing on a cloudy day, continents that refused to stay put, and a famous eclipse expedition whose inconvenient photographs were quietly set aside. Here, too, is the darker register of human knowledge: science conscripted as a weapon, dressed up as ideology, gamed by metrics, and occasionally faked outright.

But this is not a book that sneers at science. Its central insight is that knowledge is wildly uneven—stretching from outright obscurantism at one end to the proven, testable triumphs of applied science that are already building the twenty-second century at the other. Learning to tell the difference is the great task. With wit, narrative verve, and not a single equation, this book offers three companions for that task: chaos as the engine of discovery, vigilance as the duty of a free society, and humility as the beginning of wisdom.