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Frightened? Of a lady in mirror? Scary, isn't it.
scary skull and mirror
Can you stack these?
building3
Do you see any grey dots where the black lines intersect? In fact, there is nothing.
grey dots
If you stare at one yellow dot for a while, the other yellow dots disappear.
yellow dots
Is this really a square?
lines3
3 perfect squares.
perfect squares

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