AgnosticBoy
Open-minded Skeptic
True, ...the definition of Universe, or how we deal with it, is further limited by philosophy and practice in science. And I think these are imposed constraints and not necessary ones because I believe some supernatural things can be observed which should make it part of the observable Universe. But again the issue is that science just ignores it.To correct the premise, it would be essential to define "universe" clearly. For example - is it:
1. The Observable Universe: Refers to the part of the universe that we can observe and measure, limited by the speed of light and the age of the universe?
Either way, I agree with your solution of distinguishing between observable Universe and the totality of existence.
Generally, its for the same reason that you can't see a ghost. We can't detect them although there are exceptions.No. I would not accept that as evidence for nonphysical reality. Why would I? I have already argued re the reports that physical interaction happens re OBEs so proving they are real naturally means they are also physical. At this point I do not see it necessary to "explain" the non existence of a nonphysical since both mean the same thing. So if you feel there is a strong case for the existence of a non "thing", then feel free to make a case.
If you say they are physical, then you are left with the challenge explaining why we can't detect them or anything on the other side.