The article argues that Marx’s use of the concept of ideology in The German Ideology is incidental to a sustained critique of how those he described as the German ideologists think and reason about society and history and that this critique is not simply of an idealist theory that represents society and history as determined by consciousness but of methods of reasoning that treat concepts, even of those of political economy, as determinants. His view of how consciousness is determined historically (...) by our social being does not envisage some kind of mechanical transfer of class status to class consciousness. Rather, he works with an epistemology that takes the concepts foundational to political economy as expressions or reflections of the social relations of a mode of production. The difference between ideology and science is the difference between treating those concepts as the primitives of theory and treating them as sites for exploring the social relations that are expressed in them. Thus, the historical rather than further undermining claims to knowledge, provides both the conditions under which knowledge is possible and its limitations. (shrink)