This note will challenge G. A. Cohen's view of the interaction between legal systems and economic structures; such interaction raises the so‐called problem of legality, which Cohen sets out to solve in the eighth chapter of Karl Marx's Theory of History . In the course of this note, we shall interrogate the presumed rigor of Cohen's theory of base/superstructure relations, to which his understanding of law is central. His approach will not be simply destroyed, but will be resituated in a (...) network of problems that can highlight a certain fissure between his aspirations and his performance. (shrink)