Current interpretations of Heidegger's notion of das Man are caught in a dilemma: either they cannot accommodate the ontological status Heidegger accords it or they cannot explain his negative evaluation of it, in which it is treated as ontic. This paper uses Simmel's agonistic account of human sociality to integrate the ontological and the ontic, indeed perjorative aspects of Heidegger's account. Section I introduces the general problem, breaks the exclusive link of Heidegger's account to Kierkegaard and delineates the general form (...) of a solution. Section II then sketches Simmel's conception of sociology and sociality. Section III determines what Heidegger is trying to do in Chapter Four of Division I in Being and Time in order to formulate a strictly ontological account of das Man. Section IV uses Simmel's account of sociality to build into this ontological account an inherent tendency to display the negative features Heidegger ascribes to das Man. In conclusion, section V points to how the proposed account of das Man intimates the character of fundamental ontology as nascently a form of critical theory. It also explains the extent to which Heidegger's perjorative characterisations of das Man and the Man-selbst are legitimate. (shrink)