Wage Labor and Capital

From what I gather in this chapter was that Marx describe in detail relationship between the capitalists and the wages of the laborer. I notice he constantly refers to the capitalist as almost if they our an entirely different mechanism other then a person. He also stresses the importance of the laborer and implies that because they produce the product that they have the real power or should. I can also tell from his analysis of economics that he knows a great deal of how they function which contradicts the belief that communism failed because Marx doe not know about economics. I happen to believe Marx knew allot about economics but Stalin and Mao didn't.