ABSTRACT
The organic world consists entirely of interactions. Presently a new scientific discipline has even been isolated under the name of "ecology", which is occupied with the study of interactions between the organism and its environment and, in part, of interactions between plants and animals. Among the other laws which govern the existence and activity of the collective, it is necessary to analyze the law of interaction. The interaction of physical forces is, as is known, the subject of study in mechanics; the phenomena of molecular and chemical interactions are studied in physics and chemistry. The results of the interaction of classes and other collectives are shown not only in the gradual mitigation of differences, but also in the level of influence of more significant collectives on the general course of events. Interaction is first of all established between vendors and consumers or purchasers, thanks to which the setting of prices occurs.
