Hey guys, I want to understand the basic assumptions of MWI in quantum physics. So one of it is that all possible states exist in different universes, and that's relatively understandable although weird. Now my problem is the splitting of the universes and how and when does it happen. Example 1) Schrodinger's cat. In normal circumstances the decoherence occurs at the detector and we observe only one outcome. MWI says that both possibilities exist, just in different universes, continuously, so when and how does the splitting occur, are possibilities already split per se so that a cat is let's say alive in our universe and dead in another? Example 2) Macroscopic localization The good old is the moon there when nobody looks question. In normal circumstances and if we regard that this universe is the only one that is real, due to decoherence the moon is there or thereabout at any instant, it is highly localized. So this is a bit different than Schrodinger's cat, MWI would assume that the Moon can be at any location in the universe (of course one location per universe), so how does this follow from decoherence which gives moon a constant location throught time (e.g. there was no situation where the moon was spread through space and then "collapsed" to a definite position in our universe leaving other options to realize in another universe) Your suggestions are welcome. Thanks.