Unification and Scientific Realism Revisited

PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1986:394 - 405 (1986)
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Abstract

Van Fraassen has argued that quantum mechanics does not conform to the pattern of common cause explanation used by Salmon as a precise formulation of Smart's 'cosmic coincidence' argument for scientific realism. This paper adds to this list some common examples from classical physics that also do not conform to Salmon's explanatory schema. This is bad news and good news for the realist. The bad news is that Salmon's argument for realism does not work; the good news is that realism need not demand hidden variables in quantum mechanics if they are not used in classical mechanics. Many correlations in physics are explained in terms of property identity (contra Salmon). This leads to a new argument against van Fraassen because the unified version of the theory obtained by identifying theoretical properties is always less empirically adequate

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reprint Forster, Malcolm R. (1986) "_Unification and Scientific Realism Revisited_". PSA Proceedings of the Biennial Meeting of the Philosophy of Science Association 1986(1):394-405

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Malcolm Forster
University of Wisconsin, Madison

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