Barnard, Robert [1999] 'Is Vagueness Non-Projectability?', Acta Analytica 14, pp. 47-66.

Vague predicates exhibit indeterminate extensions which give rise to borderline cases where it is not clear whether or not the predicate applies; this indeterminacy, interpreted as boundarylessness, is also taken to be the source of Sorites-type paradoxes. In this paper I argue that if vague predicates are understood to be non-projectable predicates (like Goodman’s ‘grue’ or Kripke’s ‘quus’), then indeterminate extensions and borderline cases will be a consequence of the underdetermination of the predicate’s meaning; however, sorites-type paradoxes will be blocked because the non-projectability of vague terms is incompatible with boundarylessness. I propose a view called ‘nonprojectionism’ that maintains that there are multiple precise predicates which realize vague predicates such a ‘bald’, but that our linguistic use underdetermines which predicate is actually used.