States of ignorance and ignorance of states: Examining the Quantum Principal Principle

Earman (2018) has recently argued that the Principal Principle, a principle of rationality connecting objective chance and credence, is a theorem of quantum probability theory. This paper critiques Earman's argument, while also offering a positive proposal for how to understand the status of the Principal Principle in quantum probability theory.

Automated summary

This paper criticizes Earman's argument that the Principal Principle is a theorem of quantum probability theory, and also presents a positive proposal for understanding the status of the Principal Principle in quantum probability theory.