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7. Existence / D. Theories of Reality / 9. Vagueness / a. Problem of vagueness

[why vagueness matters to philosophy]

4 ideas
Austin revealed many meanings for 'vague': rough, ambiguous, general, incomplete... [Austin,JL, by Williamson]
When bivalence is rejected because of vagueness, we lose classical logic [Williamson]
Vagueness undermines the stable references needed by logic [Williamson]
A vague term can refer to very precise elements [Williamson]