Is it the Principal Principle that Implies the Principle of Indifference?

Abstract

Hawthorne et al. (Br J Philos Sci, http://bjps.oxfordjournals.org/lookup/doi/10.1093/bjps/axv030 ) argue that the Principal Principle implies a version of the Principle of Indifference. We show that what the Authors take to be the Principle of Indifference can be obtained without invoking anything which would seem to be related to the Principal Principle. In the Appendix we also discuss several Conditions proposed in the same paper.