Plato was a famous early curmudgeon when it came to the dangers of externalizing memory. In the dialogue Plato wrote between Socrates and the aristocrat Phaedrus, Socrates tells a story about the god Theuth discovering “the use of letters.” The Egyptian king Thamus says to Theuth:
This discovery of yours will create forgetfulness in the learners’ souls, because they will not use their memories; they will trust to the external written characters and not remember of themselves.
(Of course, Plato’s ideas are only accessible to us today because he wrote them down.)”