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Brainteasers ★ Optical Illusions, a page full of interesting brainteasers, cool pictures and optical illusions. These interesting brainteasers, optical illusions and pictures are amazing, astonishing and astounding! Purchase toys and games to test the limits of your brain on this page too.
In black you can read the word GOOD, in white the word EVIL (inside each black letter is a white letter). It's all very physiological too, beca use it visualize the concept that good can't exist without evil (or the absence of good is evil).