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7) The copyist may introduce mistakes induced by phonetic and orthographical changesorthographic changes. This is probably more likely to happen when a text is copied by dictation and it is more likely to happen in a period in which orthographical rules orthographic rules are less severe. This frequently happens in the “vulgarised” texts (cf. vulgarisation).
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Changes that are more likely to occur when a text is copied by dictation, are major changes in orthography and morphology. Such changes seem to have been particularly frequent in the copying of Latin texts in the early middle ages, when the orthographical norm orthographic norm was not very strong.
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