Abstract
Informational structural realism (ISR) offers a new way to understand the nature of the “structure” that structural realists claim our best scientific theories get right about the world. According to Luciano Floridi, who has given the most detailed formulation of ISR so far, this structure is composed of information representing binary differences. In this paper I assess whether ISR offers a good way to resolve the tension between the no miracle argument (often taken to support scientific realism) and the pessimistic meta-induction (often taken to support antirealism). With regards to this important motivation for structural realism, I shall argue that ISR faces insurmountable difficulties. However, I agree that interpreting “structure” in terms of information can be profitable for the realist. Instead, I offer a new version of ISR that borrows from algorithmic information theory. As a result, a more realist version of ISR is provided.
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Notes
See Otavio Bueno (2010) for an informational version of structural realism that retains van Fraassen’s agnostic stance towards unobservables.
For a detailed explanation of the difference between syntactic and semantic approaches to the nature of scientific theories see Rasmus Grønfeldt Winther (2020).
I am grateful to an anonymous reviewer from Synthese for emphasizing this point.
I wish to thank an anonymous reviewer at Synthese for pointing this out.
For a fuller discussion of this issue as well as his own position, see Krebs (2019).
Majid Davoody Beni has done some work to create a version of ISR he calls “epistemic informational structural realism” (EISR). He agrees that Floridi’s own ISR leans too far in the direction of antirealism (2016). He develops accounts around the idea of biosemiotics (2017) and Shannon’s concept of entropy (2018). These provide interesting alternative versions to the one I give. However, both these new accounts rely on ideas that renders EISR less realist than standard forms of structural realism. For example, biosemiotics defines information in terms of “intentions” (2017, 191–195) and entropy appears to depend on numerous pragmatic constraints (2018, 639–640). For that reason, I think it is important to explore how algorithmic information theory provides a more realist measure.
See Li and Vitányi (2019, 108) for the formal proof.
Whilst all structural realists agree that the structure of the world can be known, and that this cuts across the observable/unobservable divide, there are differences held at the level of observables. Some structural realists allow knowledge of non-structural properties of observables whilst others do not. Here I do not take a stance on this debate and ASR could be adopted by advocates of either position.
See Li and Vitányi (2019, 177) for the formal proof.
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Acknowledgements
An earlier version of this paper was presented at the conference “Alternative Approaches to Scientific Realism” 12–14 April 2021 at the Munich Center for Mathematical Philosophy. I am very grateful for the constructive comments and suggestions of the attendees. I am also grateful for the insightful recommendations from three anonymous reviewers at Synthese that helped improve the paper in multiple respects.
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Wheeler, B. How realist is informational structural realism?. Synthese 200, 480 (2022). https://doi.org/10.1007/s11229-022-03911-8
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DOI: https://doi.org/10.1007/s11229-022-03911-8