Say’s Law, Marxian Crisis Theory and the Interconnectedness of the Capitalist Economy

Joseph Persky ()

Review of Political Economy, 2018, vol. 30, issue 3, 269-283

Abstract: Scholars have long debated exactly why Marx felt that general gluts were not just possible, but inevitable. This article argues that Theories of Surplus Value anchored that necessity in the complex interconnectedness that characterizes capitalist production. There, Marx’s criticism of Say’s Law builds on a version of crisis theory that begins with raw material shortages in a leading sector. The disturbance is then transmitted through the many inter-industry linkages in the capitalist economy. What starts as a supply-side shock in a leading sector is transformed into a broad crisis of aggregate demand as workers are laid off and businesses fall into insolvency. This article argues that Marx’s later discussion of other types of crises in Capital can be read as consistent with this approach. A severe profit squeeze in a leading sector (whether originating in intermediate good prices, market demand, rising wages or rising use of fixed capital) necessarily turns into a general glut. In this context, Say’s Law becomes an irrelevant theorem concerning an imaginary economy. What Marx sees as fundamentally new under capitalism is not the use of money and the separation of sale and purchase, but massive interconnectedness.

Date: 2018
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DOI: 10.1080/09538259.2018.1439575

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