David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
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Philosophy Compass 6 (3):180-195 (2011)
Leibniz’s Law (or as it sometimes called, ‘the Indiscerniblity of Identicals’) is a widely accepted principle governing the notion of numerical identity. The principle states that if a is identical to b, then any property had by a is also had by b. Leibniz’s Law may seem like a trivial principle, but its apparent consequences are far from trivial. The law has been utilised in a wide range of arguments in metaphysics, many leading to substantive and controversial conclusions. This article discusses the applications of Leibniz’s Law to arguments in metaphysics. It begins by presenting a variety of central arguments in metaphysics which appeal to the law. The article then proceeds to discuss a range of strategies that can be drawn upon in resisting an argument by Leibniz’s Law. These strategies divide into three categories: (i) denying Leibniz’s Law; (ii) denying that the argument in question involves a genuine application of the law; and (iii) denying that the argument’s premises are true. Strategies falling under each of these three categories are discussed in turn
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David K. Lewis (1986/2001). On the Plurality of Worlds. Blackwell Publishers.
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Citations of this work BETA
Pablo Cobreros, Paul Egré, David Ripley & Robert van Rooij (2013). Identity, Leibniz's Law and Non-Transitive Reasoning. Metaphysica 14 (2):253-264.
Mahrad Almotahari (2014). Metalinguistic Negation and Metaphysical Affirmation. Philosophical Studies 167 (3):497-517.
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