  Confronted with the task of applying semantically vague predicates like tall and red to borderline cases, the intuitions of respondents in psycholinguistic studies often tend to become uncertain. Subjects produce varying responses for the crucial data, and the framers of the studies have produces varying explanations for the data. In one of the earlier studies, Bonini et al. point to the asymmetries in judgments of truth and falsity for borderline cases of a is red/tall and ultimately reject truth-gap and truth-glut accounts in favor of an LEM- and LNC-compatible epistemic theory of “vagueness as ignorance”. That is, the subject S “mentally represents vague predicates in the same way as other predicates with sharp true/false boundaries of whose location S is uncertain” (Bonini et al. 1999: 387). 