Social Media Can’t Figure Out This Optical Illusion

2 min read


Optical illusions are fun to look at when on the toilet, drunk and/or needing distraction. 

But this viral video shows an optical illusion which will require far more time and attention than your usual five-second brain-twister. 

This 3D printed arrow can’t point left, no matter which way the user turns it. 

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Designed by mathematician and sculptor Kokichi Sugihara, Twitter was miffed as to why the arrow can’t turn left. 

Twitter user @ThamKhaiMeng who originally shared the video, and included the solution to the illusion in his caption: 

"This arrow by mathematician and sculptor Kokichi Sugihara can't point left. Here's how it works: It's 3D-printed with a bunch of curves our brains don't register."

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