ABSTRACT

The existence of factors exerting an off­ setting impact which have to accompany every dynamic law affects not only the specific the­ oretical formulation of any dynamic law, but also the complexity involved in its em pirical identification. As a result of the existence of a large number of factors that greatly strengthen (or weaken) its impact during a given period, a dynamic law may be iden­ tified only through patient investigation and even in this case only if we intend to find its basic trends and not its precisely en­ suing consequences. In addition, if we want to iden­ tify empirically the functioning of a dynamic law, we must also bear in mind all the other dynamic laws,

because they are all interrelated and interdepen­ dent, constituting — in their entirety — a certain system of laws.