Full Idea
Why should we think vague language is explained away by how things would be if it were made precise? Supervaluationism misrepresents vague expressions, as vague only because we have not bothered to make them precise.
Gist of Idea
Supervaluation misunderstands vagueness, treating it as a failure to make things precise
Source
R Keefe / P Smith (Intro: Theories of Vagueness [1997], §3)
Book Reference
'Vagueness: a Reader', ed/tr. Keefe,R /Smith,P [MIT 1999], p.33
A Reaction
The theory still leaves a gap where vagueness is ineradicable, so the charge doesn't seem quite fair. Logicians always yearn for precision, but common speech enjoys wallowing in a sea of easy-going vagueness, which works fine.