"We have books made 500 years ago that look freshly printed, but we don't know how long electronic formats will survive. Today's computers are not able to read prehistoric floppy disks. All that is said is recorded, and knowing it is recorded, we don't feel any more the need to remember it"
Or, you know, you can move data around in a similar way you move books around.
And how is that working out for us?
Eco had made fun of the idiotic tendency of journalists to title articles about him with some pun on "echo".