Having electronic voting machines without a paper trail has got to be the stupidest, most shortsighted or corrupt political decision I have ever heard about. - Pat Holmes
Only a part of what is perceived comes through the senses from the object. The remainder always comes from within. Artists, architects, stage artists, magicians and camoufleur either take advantage of optical illusions or try to avoid them. They are vastly entertaining, useful, deceiving or disastrous, depending upon the viewpoint.
Included in the introduction is a history of optical illusions and an initial discussion on understanding optical illusions.
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