Full Idea
With the super-truth approach, if P is 'blob is pink' and R is 'blob is red', then P&R is false, and P∨R is true, since one of P and R is true and one is false in any complete and admissible specification. It encompasses all 'penumbral truths'.
Gist of Idea
With the super-truth approach, the classical connectives continue to work
Source
Kit Fine (Vagueness, Truth and Logic [1975], 3)
Book Reference
'Vagueness: a Reader', ed/tr. Keefe,R /Smith,P [MIT 1999], p.132
A Reaction
[See Idea 9767 for the super-truth approach, and Idea 9770 for a contrasting view] The approach, which seems quite appealing, is that we will in no circumstances give up basic classical logic, but we will make maximum concessions to vagueness.
Related Ideas
Idea 9767 A vague sentence is only true for all ways of making it completely precise [Fine,K]
Idea 9770 Logical connectives cease to be truth-functional if vagueness is treated with three values [Fine,K]