I’d like to say they’re beautiful but that would be the same as saying tattoos are body art when in fact tattoos look like psoriasis or eczema or such. POV, I guess.

After a certain point of sophistication of design, I could no longer take seriously, the story that a bunch of blokes meet in the back room of a pub, and, over a few pints, they work out the designs and then go off to execute them in a night. These designs are the highest form of sacred geometry. I read somewhere that one mathematician said that they represent an entirely new study of non-Euclidean geometry.

I do believe it.

Now, who would be the most likely to come up with a non-Euclidean geometry? Duh. Not the boys sipping suds in the back room. That’s for sure. And not the geeks from MIT. So that doesn’t leave a lot of other possibilities. They are a form of communication from a species we have not yet encountered. From where, I can’t say. But it is clear their culture is more highly evolved than ours. Hell, We still have capitalistic oligarchies bleeding the poor for more money.
The species which creates these designs left that sort of primitive greed behind milleniums ago.