"Speculation is fun but no one really knows shit about the really big picture. We should celebrate the gradual expansion of the speculation which is supportable by evidence without imagining for a moment that we now know it all. We don't and we never will. Get used to it, fellow puny humans."
Interestingly there will come a point when we know less than we do today:
The universe is expanding. As this process continues more and more of the universe will reach light speed relative to us and disappear.
There will come a time in the distant future when the only thing we can observe is our own Galaxy. Scientists at that point will reason that this is all that exists, that the entire universe is our own Galaxy.
They may come across ancient writings talking about other such universes (to them) but my guess is they will ignore them and only deal with their own observations (in true scientific style).
Interestingly there will come a point when we know less than we do today:
The universe is expanding. As this process continues more and more of the universe will reach light speed relative to us and disappear.
There will come a time in the distant future when the only thing we can observe is our own Galaxy. Scientists at that point will reason that this is all that exists, that the entire universe is our own Galaxy.
They may come across ancient writings talking about other such universes (to them) but my guess is they will ignore them and only deal with their own observations (in true scientific style).