Lina Maria Lissia
University of Turin
Vann McGee has presented a putative counterexample to modus ponens. I show that (a slightly modified version of) McGee’s election scenario has the same structure as a famous lottery scenario by Kyburg. More specifically, McGee’s election story can be taken to show that, if the Lockean Thesis holds, rational belief is not closed under classical logic, including classical-logic modus ponens. This conclusion defies the existing accounts of McGee’s puzzle.
Keywords McGee's counterexample to modus ponens  Lottery Paradox  Belief Closure  Lockean Thesis  conditionals  rational belief
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References found in this work BETA

Probability and the Logic of Rational Belief.Henry E. Kyburg Jr - 1961 - Middletown, CT, USA: Wesleyan University Press.
Probability and the Logic of Rational Belief.Henry Ely Kyburg - 1961 - Middletown, CT, USA: Middletown, Conn., Wesleyan University Press.

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