Some visual illusions are very strong, this one might be the strongest I've seen yet:

twitter.com/ComputingByArts/status/1743675596268601546

One can place the cursor at various parts of the image to verify that the wire frame is not moving relative to the screen.

I don't know if there is a detailed neuroscience understanding of this one.

May 11, 2025 update: Another version of that, presumably: x.com/algekalipso/status/1921416201642930357

73 million developer accounts, 100 million repositories, and plenty of processes depending on GitHub being up...

I created this rather interesting color thing a few days ago and committed it and the Julia notebook which generated it



and now I continued this line of thinking and made another one (and a much cleaner version of code)




and hoped to commit it as well, but...

UPDATE: GitHub is fixed: github.com/anhinga/late-2021-julia-drafts/tree/main/color-motifs