A necessary prerequisite for application, to the humanities, of the techniques of contemporary logic, which have proven so effective in the formalization of the natural sciences, is explication of concepts, i.e., the setting up of unambiguous analogs permitting subsequent formal operations with these concepts within the confines of a clearly defined model. Today, the need for and the fruitfulness of modeling are obvious, and any explication meeting the requirements of unambiguity is therefore regarded as unquestionably a step forward. This is (...) entirely natural. (shrink)