Economic theories of uncertainty are unpopular with financial experts. As sociologists, we rightly refuse predictions, but the uncertainties of money are constantly sifted and turned into semi‐denial by a financial economics set on somehow beating the future. Picking out ‘bits’ of the future as ‘risk’ and ‘parts’ as ‘information’ is attractive but socially dangerous, I argue, because money's promises are always uncertain. New studies of uncertainty are reversing sociology's neglect of the unavoidable inability to know the forces that will shape the financial future.