Instead of paper we have pupils whose minds have to be impressed with the symbols of knowledge. Instead of type we have the class books and the rest of the apparatus devised to facilitate the operation of teaching. The ink is replaced by the voice of the master, since this is what conveys information from the books to the mind of the listener; while the press is school discipline, which keeps the pupils up to their work and compels them to learn.
In moving from an understanding and experience of knowledge as relationship to knowledge as representation there might be something important that has been forgotten, something to do with what gives meaning to knowledge in the first place. Plato attributed a powerful critique of writing on these lines to his mentor Socrates. Socrates was an oral thinker who lived and taught during a time when there was transition to a new communications technology, the technology of alphabetic writing which came to Greece through the Phoenicians in the form of pictograms related to those used by the Ancient Hebrews.