Original sentence: It wasn’t until the 2nd century AD that the accents and breathings appeared sporadically in the papyruses.The need for the diacritics arose from the gradual divergence between spelling and pronunciation
Edited sentence: Aristophanes' purpose was to reinforce correct orthography, which was fast diverging from pronunciation as the latter was progressively becoming simpler.It wasn’t until the 2nd century AD that the accents and breathings appeared sporadically in the papyri