The subject being of great interest, if only to confuse one as to intepretation direction?..but I must admit to being curious as to how a (known) quantum process, is certain to have more than one outcome? "therefore no ironclad position can be given to a particle".
Ok lets see if I can untangle my confusion, a wavefunction is used, actually its the process that describes various outcomes of various events, when a measure occurs, the wavefunction collapses? Surely at the collapse junction, the particle in question should automatically dissapear, a collapse really does equal a dissapearence?
So "knowns" become "unknowns", if they (particles) keep branching into hidden area's, then there would be so many junctions where the number of collapses, far exceed the available space's. If knowns are measurments, and unknowns are post measures, then looking up at the moon for a short period should remove a large number of particles near it's vicinity, thus, there must be an infinity number of moons copied to "other" locations?
Every single observation instigated by every single observer, at every single instant, or specifically measurer, in every single multiverse, and all of their particle interactions, (a particle colliding with another particle is surely an act of measure, you do not need eyes to interact?) at local vicinities, would cause the appearence of many moons?..I look up and see only one.
The 100^500 vacuum states would seem miniscule?, in contrast to the number of branching junctions needed to accomodate every single observation, at every possible location, in every many worlds?