Optical illusion(s)

[quote=“Silver,post:12,topic:37839"”]

I’m one of those people that can alter how I perceive it and “force” myself to see it to either way on demand.

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Me too. I have to blink at the point where the extended leg is obscured, pointing into the screen, and then I can change directions. Thinking about which way I ‘want’ it to turn seems to help.