Babson’s Early Warning: Reassessing a Neglected Voice in the History of Economic Thought
No. 60, Jul.-Aug. 2026 The Great Depression of the 1930s is often portrayed as an event that caught the economic and financial establishment entirely by surprise. Yet Roger Ward Babson – frequently described as a precursor to contemporary crisis forecasters such as Nouriel Roubini – issued a remarkably explicit warning on 5 September 1929, at the National Business Conference. He cautioned that a “crash” was imminent, pointing to factory closures, rising unemployment, and “a serious decline in business activity.” His intervention came at a moment when Irving Fisher, the distinguished Yale economist whose name is associated with the Fisher equation, the Fisher theorem, and the Fisher effect, continued to argue that although stock prices might undergo some downward adjustment, nothing “in the nature of a crash” was foreseeable. Even on 21 October 1929, just days before the dramatic collapse, Fisher referred merely to “a slight shake‑out in some of the more marginal circles of the stock market.” More














