Abstract

The distinctions among facts, propositions, and events are supported by linguistic analyses segregating factive, propositional, and eventive predicates. The concepts of fact, proposition, and event may be basic categories of human understanding, as well as being ontologically significant. FPE theory was developed in part to reject the identification of facts with true propositions. The degree of ‘fineness’ of individuations within each category results from how closely event-, fact-, or proposition-individuation mirrors linguistic semantic structure. Event structure is not reflected in many event phrases. Fact- and proposition-structure typically does reflect semantic structures of factive and propositional clauses. The relevant properties for event individuation are all expressible by eventive predicates. Fact and proposition individuation is not as straightforward, because so many factives and propositionals do not express properties relevant to the Leibnizian principle. The intractability of proposition individuation may be overcome through an explanation of fact cognition.