ABSTRACT
Against the backdrop of the distinction between sociological and economic explanations, as synthesised by the respective prominence of social conventions and individual rationality as explanans, this short essay suggests the existence of a common methodological element which is the notion of situational logic originally developed by Karl Popper. This notion helps clarify the economic explanation as a type of sociological explanation and the conception of rationality as maximisation of an objective function as only a type of rational behaviour.
