Abstract
I scrutinize (a) the alleged dichotomy between epistemic and ontological forms of structural realism, and (b) the considerations used to motivate the ontic variety over the epistemic. I argue that there’s nothing in the traditional realism debate that calls for ontological structural realism.
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Notes
- 1.
:̧def :̧def Ladyman (1998), French and Ladyman (2003) and French and Rickles (2003) defend this premise particularly for quantum particles and quantum fields, and tentatively point towards the nature of spacetime. Pooley (2006) dissents, especially regarding the underdetermined status of spacetime points. See also Redhead and Teller (1992) and Saunders (2003b) for criticism of the underdetermination thesis, and French and Krause (2006) for further defence.
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The realist explanation of this success actually is independent of the existence or otherwise of spacetime points altogether, as corresponding to points of the mathematical manifold of a GTR model. The realist can remain agnostic of the ‘fine-structure’ of spacetime at the Planck-scale, only maintaining that the coarse-grained macrofeatures that emerge from the ultimate quantum theory of gravity are correctly described by GTR.
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Ladyman and Ross (2007) perhaps also argue for this claim, having shifted away from the argument from metaphysical underdetermination.
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It has been suggested that the individuals and non-individuals packages could be viewed as different representations of the common ‘structuralist core’ but this intuition must be substantiated in order to show how the underdetermined options go over and above the common core, instead of just being metaphysical alternatives.
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Acknowledgements
I wish to thank Steven French and Angelo Cei for helpful correspondence.
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Saatsi, J. (2009). Whence Ontological Structural Realism?. In: Suárez, M., Dorato, M., Rédei, M. (eds) EPSA Epistemology and Methodology of Science. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3263-8_22
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