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Two Kinds of Possibility

Dorothy Edgington
DOI: http://dx.doi.org/10.1111/j.0309-7013.2004.00112.x 1-22 First published online: 1 July 2004


I defend a version of Kripke's claim that the metaphysically necessary and the knowable a priori are independent. On my version, there are two independent families of modal notions, metaphysical and epistemic, neither stronger than the other. Metaphysical possibility is constrained by the laws of nature. Logical validity, I suggest, is best understood in terms of epistemic necessity.

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