Marx and Sraffa on the Theory of Value — Bill Lucarelli (2006)

This paper compares Marx’s and Sraffa’s theories of value, arguing that they answer different questions. It defends Marx’s original theory while explaining why Sraffa’s surplus approach cannot fully replace or reconcile with it.

1. Marx’s theory of value is fundamentally different from Sraffa’s and cannot be reduced to an embodied labor theory.

2. Marx’s concepts of abstract labor, value, and surplus value explain capitalism in ways the Sraffian approach cannot.

3. The transformation problem does not disprove Marx’s theory because critics misunderstand what Marx was trying to explain.

4. Sraffa successfully reconstructs the classical surplus approach, but this is not the same as Marx’s theory of value.

5. Prices and values serve different roles in Marx’s analysis—prices describe market outcomes, while value explains the underlying source of profit and exploitation.

6. Marx’s theory of value remains a coherent and powerful explanation of capitalism despite Sraffian criticisms.

🧠 Conclusion

This paper argues that Marx and Sraffa are not offering rival versions of the same theory—they are trying to explain different aspects of capitalism.

Sraffa develops a powerful model for explaining prices and the distribution of the economic surplus, while Marx develops a theory of value, exploitation, and the social relations that produce that surplus.

According to the paper, many criticisms of Marx arise because his theory is mistakenly treated as a pricing model rather than a broader explanation of capitalism.

The paper concludes that Sraffa’s work strengthens classical economics but does not replace Marx’s theory of value. Instead, Marx’s concepts of abstract labor, surplus value, and value remain essential for explaining where profit originates and how capitalism functions as a social system. For Lucarelli, Marx’s theory remains coherent and resilient despite the long-running Sraffian critiques.