No, this is the issue of "If you didn't see it happen, then there's no way to figure out how it happened."
Show me the natural arch that looks like the Arch de Triumph and not just a keyhole cut.
I don't have to. I gave an example of an ancient, common complex structure in nature that was only far later emulated by man. Complexity doesn't always imply design.
if you're getting stone block arches on the beach with wave action.
That example was to show that I saw on a smaller scale, in a shorter time, effectively the same action that creates one type of natural arch.
You must be very insecure to not even be able to acknowledge that you would find such a thing as the Arch de Triumph on Mars to be incapable of natural origin.
If you're saying that I wouldn't find the one example of a known man-made structure where man has never gone, I can concede that. But it's irrelevant.
You totally obfuscated my original question. It was a simple question. Surely it cannot be lost on you. I must conclude that you are refusing to answer it based on some insecurity in your own position, whatever that is.
As you have no inclination to enter into this particular discussion with intellectual honesty, I’m done with you on this.