Dialectics is often called the tool of knowledge of nature. But, in the opinion of the author of this article, this tool is still as imperfect as the scissors would be imperfect, without the central screw uniting the two blades of this tool. This "cog" in dialectics is the fact that the "struggle" of opposites, which is the driving force behind the development of all processes of nature, is not absolute. "Struggle" is born when the dialectic system deviates from the state of equilibrium, and the goal of this "struggle" is to restore the lost equilibrium of the system.