Abstract
This article is an attempt to confront the assumptions underpinning rational choice Marxism along with its implications for politics and social theory. That initially calls for setting the new tendency within the Marxian tradition in order to see whether its proponents can deal with the issues deriving from the collapse of the old teleological vision. In this way, the subsequent epistemological critique will be undertaken within a theoretical and practical context. From this critique, it will become apparent that rational choice builds on the utilitarian assumptions of what Marx termed “vulgar materialism” and simply ignores the role of philosophical idealism entirely.