As far as I know, our current Everett branch is best explained by Born’s rule without quantum immortality (QI). There are infinitely many branches where, in the future, we start seeing evidence of it, but in each such branch Solomonoff induction (SI) will only require a finite amount of evidence to update (bounded by a constant determined by how complicated it is to implement QI in the programming language). That is what it means for SI to be universal: it works in every Everett branch, not just the typical ones.
In a sense, our observations are also well explained by Copenhagen, etc., since all interpretations make the same prediction. The supposed advantage of MWI is simplicity, but SI can’t prove it without shenanigans.
In a sense, our observations are also well explained by Copenhagen, etc., since all interpretations make the same prediction. The supposed advantage of MWI is simplicity, but SI can’t prove it without shenanigans.
https://www.lesswrong.com/posts/6Lg8RWL9pEvoAeEvr/raising-safety-consciousness-among-agi-researchers?commentId=QtwqxiwnCSksCc566