"Rotating" Cubes: An Impressive Visual Illusion

This visual illusion is very impressive. (I was skeptical and stopped and restarted the animated gif many times to look at the angles.)

One of the most powerful motion illusions I've seen: The cubes appear to be rotating in opposite directions – but they're not actually moving at all… 😮

Credit: @jagarikin pic.twitter.com/RgUFskZbZU

— Steve Stewart-Williams (@SteveStuWill) August 15, 2020

(Tip of the cap to Philip E. Tetlock.)