[Fyron]

If there were a picture, what would it look like? How could you tell?

Never said I could tell. Ah, sarcasm. Gotta love it.

Seriously, there is of course no direct evidence for hyperdimensions. But the mathematics of cosmology and quantum physics certainly point in that direction. And as for the standard of "direct evidence" itself, we don't have "direct evidence" for a lot of things (sub-atomic particles, "dark matter", etc) that are generally accepted. Heck, what "direct evidence" do I have for you other than these Posts (which are nothing more than electrons in cyberspace and my monitor)?

Please note that I NEVER used the term "direct evidence". It means something entirely different than "concrete evidence." There are plenty of examples of "concrete evidence" that rely on "indirect evidence," such as the evidence for nearly everything you mentioned. We have tons of indirect evidence of things like electrons, but no direct evidence.

But articulation betrays some intellectual acumen, does it not?

Einstein argued against the wave-like nature of particles of matter, insisting that only energy waves had particle-like properties. He was a smart guy, right? Well... being smart most assuredly does not automatically make you right (or even give you any more "rightness" than not being smart).

I never accuse Nietzsche of being a dummy - nor Russell or other atheists. So the mere acceptance of theistic beliefs is no indication of stupidity either.

Good thing I never implied such a thing.

Again, "concrete evidence". What qualifies as "concrete evidence"?

It varies depending on what is being discussed. Also, see above.

What is the tip-over point where naturalism can no longer be applied?

There is none.