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Theoretical Relicts: Progress, Reduction, and Autonomy

  • Paper
  • #Philosophy #PhilosophyofScience
Katie Robertson
@philophyser
(Author)
Al Wilson
@modalizing
(Author)
www.journals.uchicago.edu
Read on www.journals.uchicago.edu
1 Recommender
1 Mention
When once-successful physical theories are abandoned, common wisdom has it that their characteristic theoretical entities are abandoned with them: examples include phlogiston, light... Show More

When once-successful physical theories are abandoned, common wisdom has it that their characteristic theoretical entities are abandoned with them: examples include phlogiston, light rays, Newtonian forces, Euclidean space. But sometimes a theory sees ongoing use, despite being superseded. What should scientific realists say about the characteristic entities of the theories in such cases? The standard answer is that these ‘theoretical relicts’ are merely useful fictions. In this paper we offer a different answer. We start by distinguishing horizontal reduction (in which a superseded theory approximates the successor theory) from vertical reduction (in which a higher-level theory abstracts away from the lower-level theory, but nonetheless can be constructed from it); these are usually regarded as having different ontological consequences. We describe a ‘verticalization’ procedure that transforms horizontal reductions into vertical reductions. The resulting verticalized theories are abstractions rather than approximations, with restricted domains. We identify a sense in which the higher-level theory describes distinct subject matters from the lower-level theory, enabling in certain cases the higher-level theory to retain
distinctive explanatory power even in the presence of reduction. We suggest that theoretical entities from superseded theories should be retained in a scientific realist worldview just when, reinterpreted as higher-level abstractions, those theories and their characteristic entities continue to perform distinctive explanatory work in providing the best explanation for less fundamental
phenomena of interest. In slogan form: a good relict is an emergent relict.

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Sean Carroll @seanmcarroll · Mar 21, 2023
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Interesting paper from Katie Robertson @philophyser and Alistair Wilson @modalizing on reduction and emergence of scientific theories. My only concern is that they label me an "eliminativist," which isn't a label I'd give to myself!
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