He condemned various interpretations of Marx—such as historicism, idealism, economism—on the grounds that they fail to realise that Marx's "science of history", historical materialism, represents a revolutionary view of social change. Althusser believed these errors to result from the notion (mistaken in his view) that Marx's entire body of work forms a coherent whole. Althusser proffered a radical "epistemological break" in Marx's thought, which can be seen by comparing the unpublished Grundrisse and Das Kapital.[3]