There was an interesting article “Watchers of the Infinity” in which is suggested that multiverse has coherent timelines which exist without beginning and end. Thus observer’s probabilities could be calculated along such timeline in unique way (no spheres and ambiguities). But it requires that black holes don’t have singularities.
There was an interesting article “Watchers of the Infinity” in which is suggested that multiverse has coherent timelines which exist without beginning and end. Thus observer’s probabilities could be calculated along such timeline in unique way (no spheres and ambiguities). But it requires that black holes don’t have singularities.