Screpanti versus Marx on exploitation: a comment

Abstract

Ernesto Screpanti recently claimed to prove that Marx's value theory is logically inconsistent. Jettisoning the value theory, he then reconstructed Marx's theory of exploitation in a manner that supposedly preserves the gist of the original. This note shows that Screpanti's proof of inconsistency is invalid and that his reconstruction contradicts the original theory of exploitation in significant ways, for instance by implying that workers who perform surplus labor can exploit capitalists.