# The Principal Principle Implies the Principle of Indifference

Hawthorne, James, Landes, Jürgen, Wallmann, Christian, Williamson, Jon (2015) The Principal Principle Implies the Principle of Indifference. The British Journal for the Philosophy of Science, 68 (1). pp. 123-131. ISSN 0007-0882. (doi:10.1093/bjps/axv030) (KAR id:51032)

## Abstract

We argue that David Lewis’s principal principle implies a version of the principle of indifference. The same is true for similar principles that need to appeal to the concept of admissibility. Such principles are thus in accord with objective Bayesianism, but in tension with subjective Bayesianism.

1 The Argument

2 Some Objections Met

Item Type: Article 10.1093/bjps/axv030 Philosophy B Philosophy. Psychology. Religion > B Philosophy (General)B Philosophy. Psychology. Religion > BC LogicQ Science > QA Mathematics (inc Computing science) > QA273 Probabilities Divisions > Division of Arts and Humanities > School of European Culture and Languages Jon Williamson 15 Oct 2015 10:25 UTC 16 Feb 2021 13:28 UTC https://kar.kent.ac.uk/id/eprint/51032 (The current URI for this page, for reference purposes) https://orcid.org/0000-0003-0514-4209