This article discusses the significance of historical research in normative political philosophy. Methodologically ahistoricist philosophers argue that historical research has limited relevance to political philosophy as it only serves to validate if a theory is sufficiently historically fact-sensitive. However, this perspective allows for minimal engagement with intellectual history. In contrast, I advocate for a more substantial role of historical research, suggesting that it not only provides evidence to refute political philosophical views but also serves as a source of imaginative resources. I show that thinkers from across the humanities, like R.J. Collingwood, Quentin Skinner, Michel Foucault, Raymond Geuss, David Graeber, and Bernard Williams, have recognised the importance of these imaginative resources in shaping methodological reflections. These thinkers are concerned that limiting the relevance of history to normative theorising exposes ahistoricist thinkers to imaginative failures. I argue that this is best construed as a concern about the epistemic reliability of their evaluative judgments. Imaginative failures can introduce biases that unjustifiably restrict the range of solutions to practical collective problems they contemplate. Historical research serves a normative function that is unavailable to the methodologically ahistoricist approach by preventing such failures.
Victor Braga Weber (Wed,) studied this question.