This shape is a fractal made from the Mandelbrot set. I guess the joke is that the more you zoom in the edges the more detail there is, so doing them would be an impossibly infinite task. https://mander.xyz/post/8966692More info on the Mandelbrot set here.

Well that’s… unfortunate. I’d like to know how the fuck that got past editors, typesetters and peer reviewers. I hope this is some universally ignored low impact factor pay to print journal.