The paper describes specific, rarely met in other sciences, features of economics in the second half of the 20th century. The analysis of general positions which had appeared in the philosophy of science makes us conclude that economics was hardly influenced by them. From the point of view of philosophical foundations, economics remained conservative and did not change much since the middle of the century. In fact, the evolution of economics was limited because new economic theories included many elements of old theories. The paper ends with the explanation of what made economics to develop in this specific way.