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We shape our tools and then our tools shape us.

  • Culkin, John M. A Schoolman’s Guide to Mar­shall McLuhan.” The Sat­ur­day Review, 18 Mar. 1967, p. 70
  • Com­mon­ly attrib­uted to McLuhan, but writ­ten by Culkin, Most like­ly based on an idea orig­i­nat­ing from McLuhan. More here.
  • Mar­shall McLuhan (1911–1980), Wikipedia
  • John M. Culkin, Jr. (1928–1993), Wikipedia

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