 We should, however, be aware that Cohen’s interpretation is far from universally accepted. Cohen provided his reconstruction of Marx partly because he was frustrated with existing Hegelian-inspired “dialectical” interpretations of Marx, and what he considered to be the vagueness of the influential works of Louis Althusser (1918–1990), neither of which, he felt, provided a rigorous account of Marx’s views. However, some scholars believe that the interpretation that we shall focus on is faulty precisely for its insistence on a mechanical model and its lack of attention to the dialectic. One aspect of this criticism is that Cohen’s understanding has a surprisingly small role for the concept of class struggle, which is often felt to be central to Marx’s theory of history. Cohen’s explanation for this is that the “1859 Preface”, on which his interpretation is based, does not give a prominent role to class struggle, and indeed it is not explicitly mentioned. Yet this reasoning is problematic for it is possible that Marx did not want to write in a manner that would engage the concerns of the police censor, and, indeed, a reader aware of the context may be able to detect an implicit reference to class struggle through the inclusion of such phrases as “then begins an era of social revolution,” and “the ideological forms in which men become conscious of this conflict and fight it out”. Hence it does not follow that Marx himself thought that the concept of class struggle was relatively unimportant. Furthermore, when A Critique of Political Economy was replaced by Capital, Marx made no attempt to keep the 1859 Preface in print, and its content is reproduced just as a very much abridged footnote in Capital. Nevertheless, we shall concentrate here on Cohen’s interpretation as no other account has been set out with comparable rigour, precision and detail.