One of the reasons MacGyver was so great was that he couldn't fight for crap. He wasn't able to hurt anyone else without hurting himself, and that was just awesome.
Your eyes have chemicals in them that "saturate" when you stare at a bright image of a given color. When you look away, you see the complement (I think, it's been a while) of that color. That's why when you stare at the sun then look away, the big splotch is purple. Or something.
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