For 500 years after Gutenberg, the dominant form of information was the printed page: knowledge was primarily delivered in a fixed format, one that encouraged readers to believe in stable and settled truths.

People are always saying it's the end of the Gutenberg era. More to the point, it's a return to an oral era. The Gutenberg galaxy was about the written word. At its best, the digital era is part of the rediscovery of the oral. At its worst, it's a Kafkaesque victory of the bureaucratic over the imagination.