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PRO.  Note 33

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1.2.2.3.  Pragmatic Theory of Signs

The theory of signs that I find most useful was developed by the
logician, mathematician, and philosopher C.S. Peirce (1839-1914),
who is usually credited with pioneering pragmatic philosophy on
the American scene.  In this theory, also known as &quot;semiotics&quot;,
signs are defined pragmatically, not by any essential substance,
but by 