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Published online by Cambridge University Press: 28 February 2022
Quine once claimed that modal logic derived from a use-mention mistake (p. 196). In this paper, I will peddle an, equally outrageous claim: the thesis that subsumption is an essential goal of fundamental explanatory theorizing rests on a failure to distinguish explaining what made x happen from explaining why we believe what we do about what made x happen. I don't mean to suggest that the distinction wasn't noticed (except perhaps by Hume); only that it wasn't vigorously enforced. There have always been philosophers who assimilated a belief to its justification with malice aforethought.
Everyone knows that subsumption is not sufficient for explanation: the length of a pendulum is not explained by appeal to its period and the pendulum law, and emission spectra are not explained by Balmer's formula. But the spirit of the deductive-nomological account of explanation lives on in the belief that subsumption is an essential feature of an explanatory theory.
I should like to thank John Koethe, Warren Ingber, David Zaret, and Paul Teller for their stimulating attempts to talk me out of most of what follows. I was similarly aided by stimulating audiences at Chicago Circle and The University of Wisconsin where I presented an earlier draft of this paper.