Abstract
This paper states an analogy between Kant's categories of Pure Reason and the theoretical terms in sciences. The analogy consists in two points, namely the questions: Do the categories have empirical meaning and reference at all? If so, what then is their empirical meaning and reference? With respect to the categories, Kant answers in the Transcendental Deduction, within the Critique of Pure Reason, and he answers in his book Metaphysical grounds of Natural Science. Thesetwo answers are mapped onto a case from the science of social and economic history. An attempt is made to solve the problems of a particular theoretical term of this discipline in the Kantian manner, i.e.: aprioristic and metaphysical