Smith’s ‘Perfect Liberty’ and Marx’s Equalized Rate of Surplus-Value Jonathan F. Cogliano∗ The New School for Social Research October 8, 2010 Abstract Karl Marx’s use of an equalized rate of surplus-value across sectors of production is not merely a convenient assumption. The equalization of the sectoral rate of surplus-value is in fact one of the central tenden- cies of Marx’s framework, and is elevated to the level of an economic law. The reasoning behind Marx’s use of an equalized rate of surplus- value is the mobility of labor found in Adam Smith. This reasoning, when combined with the long-period method, reveals that the rate of surplus-value across sectors is subject to the same turbulent dynamics and equalization process as the rate of profit. Keywords: Karl Marx; Long-Period Method; Rate of Surplus-Value; Mobility of Labor; Adam Smith. JEL Classification Numbers: B51. ∗Please do not quote directly from this paper without permission, it is still in progress and subject to change and revision at any time. Address: Economics Department, The New School, 11th floor, 6 East 16th St., New York, NY 10003, USA. E-mail:
[email protected]. 1 Introduction Marx’s use of an equalized rate of surplus-value across sectors of production is often taken to be an assumption that paves the way to analyzing the equal- ization of the rate of profit and prices of production for all capitals. However, the equalized rate of surplus-value is much more than a convenient assump- tion. The turbulent equalization of sectoral rates of surplus-value is in fact one of the central tendencies of Marx’s framework, and is elevated by Marx to the same level as other “economic laws” (Marx 1981, 275).