"A laborer no longer makes whole articles. He receives raw materials, puts his touch on them, and passes them to another worker in the series. When the articles are quite finished they are carried out of sight by currents of commercial exchange. These currents are untraceable."
- John Bates ClarkFrom 1847 until 1938, John Bates Clark, a well-known American economist, was alive. His contributions to the theory of marginal productivity and the notion that employees add to the value of their pay have made him famous. In one of his articles, he explained an economic process that is similar to a…