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Illusory Rule (files.catbox.moe)

submitted 9 months ago by [email protected] to c/[email protected]

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[–] [email protected] 6 points 9 months ago

I opened the image in an editor and replaced the yellow lines with red ones, which made the lines look a lot straighter. I think the illusion comes from the color of the yellow interacting with lines suggested by the white background "pebbles".