Vagueness
This chapter centres on what it terms the Vagueness Trilemma: that what may impress as the only three possible types of view about what vagueness is—namely, that it is a matter of semantic indeterminacy, that it originates in rebus, and the epistemicist idea that it is a matter of our ineluctable ignorance about fully determinate matters— are each open to serious, indeed arguably fatal, objections. The chapter is organized about the possible attitudes to three interrelated, nodal theses. Bivalence—are borderline statements bivalent? Third possibility—do they possess some third alethic status—lack of truth value or some third truth value? And Verdict Exclusion: is knowledge of truth value precluded in borderline cases? It is argued that there are five consistent combinations of acceptance and non-acceptance of the three nodal issues, and that an attitude of agnosticism to all three, and a consequent broadly intuitionistic attitude to vagueness, is the way out of the Trilemma.