Abstract

This chapter discusses Edgington’s probabilistic, degree-theoretic semantics for vagueness. After describing Edgington’s semantics, her suggestion that it and classical semantics provide non-competing descriptions of a single phenomenon is examined. It is argued that the suggestion should be rejected because classical semantics is incompatible with plausible principles about the relationship between the two frameworks. Edgington also argues that the many degrees assigned to sentences in her semantics are not new truth-values. It is argued that these arguments presuppose a certain non-semantic conception of truth. Although Edgington’s arguments do force a distinction between two theoretical roles typically associated with the notion of truth, one properly semantic and one merely expressive, they do not preclude identification of the many degrees of her probabilistic formalism with new truth-values in the semantic sense.