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False Truths

Abstract : One of the most interesting and fruitful applications of logics, classical or other, has been in supplying formal frameworks for the semantics of natural language. In this paper, I discuss the following puzzle: there seem to be arguments that are logically valid - more precisely, that are instances of the rule of universal instantiation, and yet, the utterance of the premise is intuitively true while the conclusion is false. I will discuss two strategies, developed in response to different sorts of problems, that seem immediately applicable to this puzzle. While the so-called contextualist strategy blocks the puzzle at the level of syntax, the index-shifting strategy actually embraces the apparently paradoxical claim that there are logically valid arguments with premises whose utterances are true and a conclusion whose utterance is false, but insists that different points of evaluation come into play in determining the truth values of the utterances involved in the alleged counter-instances to rules of logic.
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Contributor : Isidora Stojanovic <>
Submitted on : Tuesday, May 20, 2008 - 4:58:18 PM
Last modification on : Friday, July 2, 2021 - 9:58:02 AM
Long-term archiving on: : Friday, May 28, 2010 - 7:41:34 PM


  • HAL Id : ijn_00281045, version 1



Isidora Stojanovic. False Truths. 5th Congress of the Spanish Society for Logic, Methodology and Philosophy of Science, Nov 2006, Granada, Spain. pp.75-80. ⟨ijn_00281045⟩



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