Scientists expect to be able to test everything. Perhaps, but it seems unlikely. There are things that might be real that might be untestable, unverifiable. Multiverse is untestable, yet many believe. It is equivalent to deifying infinity to the infinity power. Hawking recognized and devised maths to limit the possible number of universes to a finite set. Yet, the notion is still totally untestable. To me, the notion of the transcendent is required. Denying anything other than the quantum foam and the matter/energy of space-time, quite frankly, denies the possibility of knowing anything. It denies rationality and reason itself. I simply don’t find that reasonable. It is irrational. I suspect science will find reproducible ways to test for transcendence. I’m not sure the results will actually tell us anything useful. I suspect proving the existence of “a transcendent” will not make us wiser. It won’t answer the big questions. It won’t answer the ultimate “Why?”.