[split] (lack of) scribal mistakes / corrections

[Mark Knowles]

I think, if this hasn't been mentioned before, that with a sophicated cipher it is harder to spot mistakes once they have been made and the case for using a scratch pad is greatly increased, both of which make corrections much less likely. Also if using multiglyphs the amount of correction needed is that much greater, so I speculate that the errors just remain in the text.