This paper examines Keynes's treatment of financial conventions, focusing on the stock exchange. It shows that Keynes's approach was unclear but insightful. Some elements are combined here to clarify his implicit concept, which incorporated features of a general concept (social sharing,...

When discussing the relation between rationality and conventions under non-neoclassical uncertainty, almost all economists focus on the rationality of following a convention. This paper contributes to the construction of an alternative approach, which argues that conventions and rationality are...