has any validity outside of the human realm. Why is acknowledging the possibility of the existence of something that does not conform to known human reality a "cop-out"? It seems to me that the kind of certainty you have about something which is inherently unknowable is no different in principle from being certain that God exists.
You seem to think I'm arguing that there is a God. I'm not. I'm arguing that nobody can ever possibly know.
So, to your question, I do not know if there's reality beyond this one. I can't know, and neither can anyone else.