Yes, even handwritten records are often copies of earlier documents, which can be mis-transcribed...a rabbit hole of uncertanty. I make these comments only to flag the idea that we have no actual knowledge of the truth, just hopes based on the good will of those previous to us. Perhaps our 'certainty' levels are OK, but possibly also they could instead be designated by quality of source: "handwritten source," "governmental source," "secondary research source," "secondary family/genealogy," etc.