Socrates feared that reading and writing would undermine the kind of interactive, critical dialogue that was so important for reflective thought. You couldn’t talk back to a written text or ask it questions, and you were far too likely to think that something was true just because it was written down. Socrates also thought that writing would undermine the capacity for memory. In the ancient world, poets had developed an amazing ability to memorize thousands of lines of verse. Homer’s epics were orally transmitted from bard to bard through memory alone. But if you had a written copy of Homer’s
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