" Such a portrayal was often used as a means to silence voices critical of elite interests. With the Soviet Union's collapse, proponents of the propaganda model have argued that the functionality and credibility of anti-communism has been fundamentally compromised . Proponents state that new, more functional anathemas have arisen to take its place. Chomsky and Herman argue that one possible replacement for anti-communism seems to have emerged in the form of "anti-terrorism". Summary Chomsky and Herman summarize their theory thus: "A propaganda model has a certain initial plausibility on guided free-market assumptions that are not particularly controversial. In essence, the private media are major corporations selling a product (readers and audiences) to other businesses (advertisers). The national media typically target and serve elite opinion, groups that, on the one hand provide an optimal "profile" for advertising purposes, and, on the other, play a role in decision-making in the private and public spheres. Model Virtual The national media would be failing to meet their elite audience's needs if they did not present a tolerably realistic portrayal of the world. But their "societal purpose" also requires that the media's interpretation of the world reflect the interests and concerns of the sellers, the buyers, and the governmental and private institutions dominated by these groups (p. "

", in [3]. II. The consistency of models may be conceptual or physical. In many areas of research conceptual models have become the dominating species, as conceptual models, more easily than physical ones, can be investigated by means of computing. For conceptual models to be the shared property of a research community the concepts they involve must be capable of being shared. That is the case when a consensual understanding of these concepts has been achieved or can be achieved by means of definition, examples, etc. With respect to what is shown by a conceptual model there are differences at least with respect to computer science, mathematics and logic. Model Russian Mathematical models in one way or another establish a functional cohesion between entities such as input values and output values. Logical models establish an interpretation relationship between formulae and structures. "