Clarify the nature of objective probability

Ascertain what objective probability (chance) is by developing a coherent account that can ground probabilistic claims in contexts such as Everettian quantum mechanics and scientific practice more generally, and that reconciles determinism, measurement, and observed frequencies where appropriate.

Background

In Chapter 4, the treatment of probability in the Everettian (many-worlds) interpretation requires reconciling deterministic unitary dynamics with the Born rule and subjective uncertainty; decision-theoretic derivations are surveyed but do not settle foundational questions about the nature of chance.

Chapter 6 explicitly identifies the status of objective probability as one of three core unresolved issues raised across the book’s three multiverse proposals.