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On the Optimality of Vagueness: "Around", "Between", and the Gricean Maxims

Abstract : Why is our language vague? We argue that in contexts in which a cooperative speaker is not perfectly informed about the world, the use of vague expressions can offer an optimal tradeoff between truthfulness (Gricean Quality) and informativeness (Gricean Quantity). Focusing on expressions of approximation such as "around", which are semantically vague, we show that they allow the speaker to convey indirect probabilistic information, in a way that gives the listener a more accurate representation of the information available to the speaker than any more precise expression would (intervals of the form "between"). We give a probabilistic treatment of the interpretation of "around", and offer a model for the interpretation and use of "around"-statements within the Rational Speech Act (RSA) framework. Our model differs in substantive ways from the Lexical Uncertainty model often used within the RSA framework for vague predicates.
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Contributor : Paul Égré Connect in order to contact the contributor
Submitted on : Monday, December 28, 2020 - 5:59:05 PM
Last modification on : Thursday, March 17, 2022 - 10:08:24 AM

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  • HAL Id : hal-03089715, version 1
  • ARXIV : 2008.11841



Paul Egré, Benjamin Spector, Adèle Mortier, Steven Verheyen. On the Optimality of Vagueness: "Around", "Between", and the Gricean Maxims. 2020. ⟨hal-03089715⟩



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