We can imagine that Thamus [or Amun: this is a reference to a discussion on the value of writing in Plato's Phaedrus] would also have pointed out to … - Neil Postman

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We can imagine that Thamus [or Amun: this is a reference to a discussion on the value of writing in Plato's Phaedrus] would also have pointed out to Gutenberg, as he did to Theuth, that the new invention would create a vast population of readers who "will receive a quantity of information without proper instruction... with the conceit of wisdom instead of real wisdom"; that reading, in other words, will compete with older forms of learning. This is yet another principle of technological change we may infer from the judgment of Thamus: new technologies compete with old ones — for time, for attention, for money, for prestige, but mostly for dominance of their world-view. This competition is implicit once we acknowledge that the medium contains an ideological bias. And it is a fierce competition, as only ideological competitions can be. It is not merely a matter of tool against tool — the alphabet attacking ideographic writing, the printing press attacking the illuminated manuscript, the photograph attacking the art of painting, television attacking the printed word. When media make war against each other, it is a case of world-views in collision.