Right, and we're not: > Historical records, especially pre-record keeping are revised Here "historical records" means "the best-known interpretation of histor

Right, and we're not: > Historical records, especially pre-record keeping are revised Here "historical records" means "the best-known interpretation of historical evidence": it's not talking about modifying records made pre-record keeping. Of course we still have access to previous interpretations: people have gone to pains to ensure they're preserved (despite certain former stewards trying to erase them), and those people are building more resilient systems to avoid this happening again.