This doesn't really move the conversation forward, but an important point to make (I think) is that we as a species have never agreed that we're observing the s

This doesn't really move the conversation forward, but an important point to make (I think) is that we as a species have never agreed that we're observing the same universe. Think of all the wildly different beliefs that have co-existed (though certainly not peacefully!) at the same times throughout history. It's a feature of all reality, not a bug of the _current_ reality (I say this because some people seem to think we're in a new & novel time of history where no one agrees on anything because of "the internet" or "misinformation", but I don't think that's the case. Humans have always disagree on what reality is).