Abstract
This paper provides some discussions on 70s' Marxian exploitation theory, and also a few comments on Matsuo (2004) who criticized Yoshihara (2001). At the first place, we provide a correct proof of "Fundamental Marxian Theorem under Heterogeneous Consumption Demands" argued in Yoshihara (2001). Our new example definitely shows that there exists an individual labor with a negative exploitation rate in the von Neumann balanced growth equilibrium with a positive profit rate. Secondly, we develop a counterargument against Matsuo (2004) who criticized Generalized Commodity Exploitation Theorem. Although Matuo (2004) insisted that Generalized Commodity Exploitation Theorem is invalid from a "Humanist" point of Marxism view by providing a funny story of banana's exploitation, we argue that his banana story is not essential, so that the critical implication of Generalized Commodity Exploitation Theorem against the standard Marxian exploitation theory is still robust. Thirdly, we develop a conceptual criticism against Matuo (2004)'s alternative definition of Marxian labor exploitation, which would explain why it is problematic from the Marxian point of view.
