> Maybe my confusion is that I'm not sure a which point the universe splits. The answer to that is that the universe never really splits. It remains one big ve

> Maybe my confusion is that I'm not sure a which point the universe splits. The answer to that is that the universe never really splits. It remains one big very complicated universe, with very very very messy superpositions of state in it. But different components of these superpositions lose "coherence", which gives the appearance to us of wave collapse, even though there actually is no wave collapse. Lookup "decoherence" for more info on this.