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Single Idea 21610

[catalogued under 7. Existence / D. Theories of Reality / 9. Vagueness / f. Supervaluation for vagueness]

Full Idea

Supervaluation seems to inherit the power of classical logic, ...but also enables it to be extended. It makes room for a new operator 'definitely' to express supertruth in the object-language.

Gist of Idea

Supervaluation adds a 'definitely' operator to classical logic


Timothy Williamson (Vagueness [1994], 5.3)

A Reaction

Once you mention higher-order vagueness you can see a regress looming over the horizon. 'He is definitely definitely definitely bald'. [p.164 he says 'definitely' has no analysis, and is an uninteresting primitive]

Book Reference

Williamson,Timothy: 'Vagueness' [Routledge 1996], p.149