Logically, a supernatural realm that impinges on the
natural, including our brain, cannot exist.
An argument against anything being supernatural:
Accepting “the universe is all there is” is why Science has been so successful.
If “the universe is all there is” is not so, where is the evidence? If there is
scientific evidence for something else, it automatically becomes part of
“the universe is all there is.”
Let me put this in different words.
If you say that there is a supernatural entity that can interact with the natural
(e.g. things and people), then it must effect the natural in some way. If it doesn’t
then talking about it is meaningless, since it can’t effect the natural anyway.
To perceive this effect the supernatural must influence the natural just as
non-supernatural entities do. Therefore, in principle you should be able to
measure this effect. If you can measure this effect, then it is part of our universe
and is really part of “all that is”, and is really not supernatural or separate from the natural.
So you cannot and never will experience the supernatural because it cannot affect you.
Where is the evidence for the supernatural
— there is none!
If you are talking about multi-universes, then substitute Cosmos for universe.
O. Hooge
Naturalism and Religious Experience 