Chapter 1 The form of public discource in American culture has changed from print to image. How has the content also changed? Postman writes in order to discuss this question. He offers examples of how medium controls message, including smoke signals, graven images, clocks, written alphabet, glasses, microscopes, IQ, and mathematics. These illustrate Marshall McLuhan , “The medium is the message.” (8) The form of human conversation (“conversation” refers to all of the information exchanged…
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