> Many worlds does postulate its many worlds rather than predict them as it provides no way their existence can ever be tested for. Your conclusion does not fo

> Many worlds does postulate its many worlds rather than predict them as it provides no way their existence can ever be tested for. Your conclusion does not follow from your premise. MWI does postulate different stuff from Copenhagen, but the existence of many worlds is not one of them. Just because I postulate Peano arithmetic doesn’t mean I also postulate 2+2=4. The latter is but a consequence of the former. My understanding of MWI, is that it just "believes" the equations. Specifically, if the equations say the complex amplitude is not null, then this stuff is real. And that’s about it. It’s not our fault the equations describe non-null amplitudes, that if real are many worlds. This interpretation business could apply to macro-scale physics as well: when you send a probe so far out there that it crosses the limit of the observable universe, does it cease to exist? What if there’s people inside, will they die? One would be hard pressed to argue from their discontinued existence: why would we disbelieve the equations of relativity, that work so well for everything we can observe? Conversely, what makes you think that the equations that work so well on everything we can observe, would somehow stop working (or stop applying) on the stuff we cannot observe? I know you didn’t explicitly disbelieve the equations, but since we can’t at the same time believe in their general applicability and disbelieve MWI, it’s hard to interpret your refusal to acknowledge MIW as the most probably hypothesis as anything but scepticism about the applicability of those equations. --- To throw you a bone I personally do have a reason to be wary: physics is currently inconsistent, and when we get a credible theory of everything, it may very well use different equations that do not describe many worlds, make long range probes vanish, or both.