id author title date pages extension mime words sentences flesch summary cache txt work_4wylshaebzhcnp3hb5blgvfvk4 Shamik Dasgupta Symmetry as an Epistemic Notion (Twice Over) 2015 42 .pdf application/pdf 21350 1562 67 now, think of a symmetry of a law as a transformation on physical systems Of course, one might conclude on the basis of a symmetry-to-reality inference that absolute velocity is not real, and it would then be true that it is not a that physical situations differing in a uniform velocity boost are related formally in various ways, and that the variant features are therefore redundant in notions into coextension by requiring that the laws be objective, for example that the equations are invariant under all coordinate transformations.21 But the symmetry-to-reality inference is a good inference even It is clear from the respective contexts that both authors are inferring from a premise about the symmetries of NG to the conclusion that absolute velocity is undetectable in my sense. A better objection comes from Belot ([2013]), who argues that ontic definitions are not extensionally adequate: they count as symmetries transformations that vary features that we would not want to consider unreal. ./cache/work_4wylshaebzhcnp3hb5blgvfvk4.pdf ./txt/work_4wylshaebzhcnp3hb5blgvfvk4.txt