If people want to anticipate the development of Capitalism over a long period a knowledge of Marx is a much more effective starting point than a know… - Oskar Lange

Capitalism operates only on the basis of private costs, only private costs are rewarded and repaid, and not social costs. And even in a competitive capitalism where competition forces producers to sell at cost price takes into account only private costs and not social costs.

The existence of an ideological element in each science has caused some representatives of the sociology of knowledge to deny the objective validity of scientific statements, particularly in the domain of the social sciences. Such a conclusion is unwarranted. The validity of scientific statements can be ascertained with impersonal objectivity through an appeal to facts. Predictions derived from scientific statements are or are not borne out under the test of verification. The outcome is entirely independent of human motivations, conscious or subconscious; it depends entirely on the correctness of the scientific procedure applied in establishing the statements.

Human needs, although originally derived from biological necessity, are thus a result of the existence of society and are conditioned by the stage of development which society has reached.