fucking around with eye-twisting patterns in Illustrator
the shape in the second screenshot gets turned into a pattern brush, then put on a circle twice
about 15min, based on a question asked in the Illustrator subreddit
and a slight variant to create a spiral; I think I now see how to make Illustrator quickly do my own riffs on Escher's "Circle Limit" pieces if I find myself in that mood.
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