This is a link post for https://viderationale.blog/2024/05/04/quantum-path-to-the-multiverse/ 

Much of the arguments here comes from David Deutsch's two books The Beginning of Infinity and The Fabric of Reality. I try to explain parts of it in more detail and hopefully they make sense. 

Central claim is that the problems posed by the Copenhagen Interpretation, crisply laid out in the Schrodinger's Cat thought experiment, disappear if you view it through the lens of David Deutsch's modification of Everettian Quantum Mechanics. It explains wave-particle duality, interference phenomenon, and probabilistic outcomes of measurement, all completely physically.