Answer:
Law is not only a practical discipline, but it is also made up of a theoretical part that is very important at the time of the creation of laws and the analysis of their operation and sociological evolution.
Without a previously elaborated theory, the laws would only be a set of rigid directives, devoid of all applicability and rationality. On the other hand, by developing a theory of law in a specific and rational way, the laws are effectively applicable to the social and cultural conditions of the population to which they intend to apply, since they have carried out a prior analysis of their characteristics.