The case for a "metaphysics without ontology" has been argued persuasively by the late R. G. Collingwood. The crux of his argument is in the nature of presupposing. What are presuppositions in his view of them? They are historical facts "made" by persons or groups of persons on particular occasions or groups of occasions, "in the course of this or that piece of thinking," whenever questions arise and answers are propounded. In other words, the making of a presupposition is involved (...) in the historical occurrence of a problem, and a question about a presupposition, and how it is "made," is a question of the way in which problems arise on particular occasions or groups of occasions. Metaphysics, as a study of presuppositions, is historical inquiry into the conditions under which problems have arisen. (shrink)