> I guess I made this seem pretty complicated. in my head it was a lot
> simpler, like "If I make sure the amount of light hitting the surface is
> exactly 1, and the color of the dark square is the same as the ambient
> light, it will work."

To a genius, everything is simple. :)

This is one of the most powerful optical illusions I've ever seen. I first
saw it on Pickover's "Reality Carnival" page.

>
>  - Slime
>  [ http://www.slimeland.com/ ]

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