The things that have come into being change continually. The man with a good memory remembers nothing because he forgets nothing.
Man is an idiot. He doesn't know how to do anything without copying, without imitating, without plagiarizing, without aping. It might even have been that man invented generation by coitus after seeing the grasshopper copulate.
Facts can't be recounted; much less twice over, and far less still by different persons. I've already drummed that thoroughly into your head. What happens is that your wretched memory remembers the words and forgets what's behind them.