Summaries and comments on Lappin, S. Sorts, ontology and metaphor: the semantics of sortal structure

In this interesting study, Shalom Lappin argues that any adequate theory of sortal incorrectness must meet four requirements. First, it must account for the truth valuelessness of sortally incorrect sentences. Second, it must provide a means of distinguishing truth valuelessness arising from sortal incorrectness from other sources of truth valuelessness. Third, it must be able to capture inferences which depend on sortal factors, while preserving those implications and formulae of classical logic which are unaffected by sortal factors. And fourth, it must supply an account of a significant but often overlooked class of sortally incorrect sentences, viz., those whose sortal incorrectness is introduced via adverbial phrases.