Rediscussing Reality on the Theory of Value of Marx and Engles from the Angle of Methodology

The essence of many theoretical systems are closely connected with methodology. The common idea between Marx and Engles is that 揤alue is the measurement of effectiveness and labor cost, which has the same meaning as productive forces. ?But the theory of value in all volumes of 揷apital?is according to the way 揻rom abstraction to concretion? or from the Labor Theory of Value to 揷oncretion?step by step. Whenever going forward to 揷oncretion?a step, it has been accomplished by the connection of the Labor Theory of Value and the apparently theory of value determination, and its essence of theory is to take the Labor Theory of Value into materialist concept of history. To investigate the circulation of the total social capital particularly, we can抰 limit them to the Labor Theory of Value, and we should also pay attention to the value of utility, i.e., social effectiveness. To investigate capitalist production, we can抰 limit the description to the law of value abstractly, but understand fully: the further development of the law of value contains the determined meaning of the value of utility i.e., the social effectiveness to the large scale of the society, that is 揢tility / Labor Theory of Value?from the point of macrography. Obviously, from the point of methodology, the theory of value of Marx and Engles is not limited to the Labor Theory of Value, it is a theoretical system from abstract labor theory of value to concrete and macro 揢tility/ Labor Theory of Value?