Both instruments are processors of information. Both appeared when nothing quite like them had existed before, and both began to make their effects felt immediately (a situation that isn't invariable with new technology). Both devices were less the result of a single breakthrough than of an evolving set of technologies. Like the computer, the printing press had no one certain inventor; it was a technology whose time had come.
The Universal Machine: Confessions of a Technological Optimist (ed. 1985)