s e m i o t i c s
 
      ( Wittgenstein )
      reciprocity + interdependency of mental and physical images
      world goes on w/o us; we do not go on w/o world
      if there are no more minds there will be no more images
      the world does not depend on consciousness but images do

      de saussure
      concept = sound-image
      signified = signifier
      arbitrary (not wholly)
      unmotivated signs

      peirce
      icon, index = naturalness (motivated)
      symbol = arbitrary, learned (unmotivated),
      something with cultural significance and relevance

      connotation (cultural), symbol
      denotation (literal) - indexical, icon