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Just when you think you've seen it all in optical illusions, comes this one:
The only motion happening here is that the circles are rotating. They're not growing and shrinking, nor changing position. "The human brain is so simple," writes the original poster on Twitter, "that it can be confused by arrows."
I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.
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Optical Illusion: Are These Circles Moving or Not?
the thread has some great examples of it actually moving. https://twitter.com/Jakesaurius/status/1331542934056001536
I don't think this is an optical illusion. Cover the arrows with your fingers and you'll see the circles are actually moving around, not just rotating. You can use your finger to compare the distance between the circles and see it change over time.