(February 14, 2018 at 5:57 pm)SteveII Wrote: I am asking about an actual infinite of something concrete (not abstract). Can it logically exist? Why or why not?
No mention of God either. Philosophy subforum--let's stick with pure metaphysics.
Unfortunately, our metaphysics is bound by our experience and intuitions.
Intuitively, the Universe is finite. Huge, but finite. To the best of our knowledge, it has some 10^9 galaxies each with some 10^9 stars, leading to, according to some estimates, 7.1×10^79 atoms in the whole Universe.
This concerns the observable Universe.
Is there Universe beyond the observable Universe? Cosmologists typically say that there doesn't seem to be.
Is the space-time in our Universe all there is? who knows...
Could the space-time out of our Universe be infinite? Sure, why not?
If it's infinite, then it could hold infinite Universes... some smaller than ours, some larger, some roughly the same.
Of course, once we leave the threshold of our own Universe, the question becomes: does our Physics still apply? If not, then any intuition needs to go out the door. If yes, Jorm's answer becomes appropriate.
Heck, our intuition needs to check out when we go very fast or look at the very small within our Universe. I don't imagine it would stand if we carry on outwards.
This all then hinges on what you mean by "exist". Exist in our Universe? Exist in any form?
