Rhetorical questions, relevance and scales

Abstract

Rhetorical questions, and other varieties of pragmatically conditioned questions, present a challenge for a purely truth-conditional theory of the interpretation of interrogatives. In this paper, it is argued that relevance-theoretic principles account for the conditions of use of rhetorical questions. Concretely, it is proposed that a pragmatic principle, the "Bottom of Scale Principle", critically interacts with the Principle of Relevance and derives the dynamic meaning of the rhetorical use of a question. The Bottom of Scale Principle is also associated with the particular entailment and monotonicity properties of interrogatives, which explain the ability of rhetorical questions to license negative polarity items.