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Today’s crisis of capitalism has, unsurprisingly, led to a renewed interest in Marxism. Yet any “return to Marx” will not be found in an exegesis of ancient texts but in grounding Marx’s materialist dialectic in the present. Just as Marx critiqued 19th-century advances by incorporating them into his thought, so too must the most promising developments of the last century be synthesized into a radical understanding for the present. Unfortunately, today’s left has for too long has been relegated to social and cultural studies, ceding the “hard” discourse in economics and science to a new generation of vulgar scientistic “quants.” The resulting left has far too often neglected a dialectical critique, in favor of dichotomous relations to science.