Discussion on question by Oddthinking: Is this popular optical illusion made of a grey-scale image with coloured lines?
Discussion on question by Oddthinking…
Imported from a comment discussion on https://skeptics.stackexchange.com/questions/44609/is-this-popular-optical-illusion-made-of-a-grey-scale-image-with-coloured-lines
2186d ago – Luaan
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