In Jamie Shaw & Karim Bschir (eds.), Interpreting Feyerabend: Critical Essays. Cambridge University Press. pp. 72-88 (2021)

K. Brad Wray
Aarhus University
I examine Feyerabend's defense for theoretical pluralism. I compare it to other influential defenses of pluralism, including Philip Kitcher's and Hasok Chang's. I argue that, unlike others, Feyerabend emphasizes importance of comparative evaluations when choosing between competing theories, and that such evaluations are enhanced by the development of multiple competing theories. I also argue that the development of numerous alternative theories enables scientists to make piecemeal changes when replacing one theory with another. I illustrate this by examining the impact of Tycho Brahe's theory on the Copernican Revolution in astronomy.
Keywords Feyerabend  theoretical pluralism  comparative evaluations  Tycho Brahe  the Copernican Revolution  Hasok Chang  Philip Kitcher
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