Ser de uma maneira sem ser claramente dessa maneira: um problema para o supervalorativismo

Abstract

A central thesis of the standard supervaluationist theory of vagueness is that things cannot be a certain way without being definitely that way. Supervaluationists have presented no good argument in support of this thesis. That is natural enough, given the fact that there is an inconsistency between this thesis, the semantics and logic proposed for the definitely operator, and the notion that a precisification is an admissible way of making a vague language precise. For, if two statements are logically incompatible, it surely should not be admissible to make the language precise in such a way that they turn out to be jointly true.