Reich (2013) recapitulates my model (Helmedag 2012a) incorrectly. Above all, he mixes up exogenous with endogenous variables. Moreover, Reich's interpretation of the system's dynamics is on the one hand formally insufficient; on the other hand, matters are presented in a more complicated way...

The causal structure of capitalistic commodity production can be revealed by notionally separating total output into two categories: 'necessaries' bought by employees, and the rest constituting society's surplus. The rate of profit is determined in the wage good industry and becomes the system?s...