Simple Sentences Substitution and Intuitions

The phenomenon of substitution failure is a longstanding focus of discussion for philosophers of language. Substitution failure occurs when a change from one co-referential name to another (e.g. from ''Superman'' to ''Clark Kent'') affects the truth-value of a sentence. Jennifer Saul has shown that this can occur even in the simplest of sentences. She presents the first full-length treatment of this puzzling feature of language and explores its implications for the theory of reference and names and for the methodology of semantics.