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Published online by Cambridge University Press: 25 February 2009
1 Quine, W. V., The Ways of Paradox (Random House, 1966)Google Scholar.
2 Quine, W. V., ‘Natural Kinds’, Ontological Relativity and Other Essays (Columbia University Press, 1969)Google Scholar.
3 This is not Goodman's way of defining ‘grue’. The above definition suffices for our purposes.
4 Normal sets are sets whose members are not members of themselves.
5 Quine, W. V., ‘Natural Kinds’, Ontological Relativity and Other Essays, 128–129Google Scholar.