Information that is known to be useful is sometimes replicated. The https://en.wikipedia.org/wiki/Rosetta_Stone#Rediscovery https://en.wikipedia.org/wiki/Rosett

Information that is known to be useful is sometimes replicated. The https://en.wikipedia.org/wiki/Rosetta_Stone#Rediscovery https://en.wikipedia.org/wiki/Rosetta_Stone#Rediscovery was abused and damaged; only four incomplete copies were gradually found by luck after two millennia. There are entire academic fields trying to learn things about our history by digging up stuff that was thrown away or abandoned.