Gómez Olivares, Mário2010-11-192010-11-192009Gómez Olivares, Mário. 2009. "Risk, uncertainty and expectation as language game categories : what can still learn from Keynes". Instituto Superior de Economia e Gestão - DE Working papers nº 14-2009/DE0874-4548http://hdl.handle.net/10400.5/2544In this paper we will discuss the relation between the rationality of the agents, and the probability context that involves them in the decision process made by Keynes but considering categories such as expectation as language game, in the sense that Roger Koppl understand it as-if rationalizations. In this sense Keynes's expectations can be understand and see as only a very particular category: cognitive expectation and the uncertain situation as a very specific circumstance in production process. If expectation theory is one of the crucial issues in economic theory, a language game theory of expectation provide a more general case that need to be re-examinate as a stimulating approachengHistory of the Economic Ideas in Latin AmericaEconomic TheoryExpectationsTheory of Expectationsworking paper