Objective probability and the mind-body relation

•Everttian theory is an interpretation of objective probability rather than of QM.•Probabilistic processes can be understood to be dendritic, not stochastic.•Dendritic probability is shown to be intelligible via a novel mind-body relation.•That alternative mind-body relation has independent motivation.•Further support is thereby provided for Sebens' and Carroll's ESP.

Objectiveprobability in quantum mechanics is often thought to involve a stochastic process whereby an actual future is selected from a range of possibilities. Everett's seminal idea is that all possible definite futures on the pointer basis exist as components of a macroscopic linear superposition. I demonstrate that these two conceptions of what is involved in quantum processes are linked via two alternative interpretations of the mind-body relation. This leads to a fission, rather than divergence, interpretation of Everettian theory and to a novel explanation of why a principle of indifference does not apply to self-location uncertainty for a post-measurement, pre-observation subject, just as Sebens and Carroll claim. Their Epistemic Separability Principle is shown to arise out of this explanation and the derivation of the Born rule for Everettian theory is thereby put on a firmer footing.