EN
In the article, the author describes conceptions of contemporary economics and presents its main theories in the 20th century. It is said that development of the economics is determined by many various factors. One the one hand, it possesses internal logic of development, while one the other is bound by influences of achievements and tendencies arising in different fields of sciences. It is true that there is reason-result relation between Smith and Ricardo, Keynes and Friedman, Friedman and Lucas. The second half of the 20th century is an act of the economic scientific community 's interests taking place in the condition of a lack of the competition. Then it is claimed that in economic researches imitation best serves prestige of mathematics as a scientific model. In the end of 20th century in connection with turbulent economic and political changes taking place in the world signs of bigger openness of economical theories on other conceptions however appeared. Economists that did not fulfil requirements put forward by formalism 's followers and perceived economic processes with wider historical, cultural and political perspective were noticed. It makes easier to explain reasons why market gives so different effects. (original abstract)