I tested von Mises's 1939 birthday claim with exact arithmetic and 10^5 Monte Carlo trials per group size. 23 people really is enough.

Part 99 of Forgotten Theories, a series re-testing old scientific claims with modern tools. Find the rest under the #forgotten-theories tag. In 1939 Richard von Mises published a short paper with the unwieldy title Über Aufteilungs- und Besetzungswa...