Many thanks to Luc Bovens, Foad Dizadji-Bahmani, Michiru Nagatsu, Alice Obrecht, Julian Reiss, Ingrid Robeyns, David Teira, and two anonymous reviewers of European Journal for Philosophy of Science for very helpful comments on previous versions of this article. I also thank audiences at the London School of Economics (LSE) and the Erasmus Institute for Philosophy and Economics (EIPE) at Erasmus University Rotterdam for their feedback.