Yes they actually did have a reason. And what i found about it was that they actually used it for stuff we save in powere points and research etc. What i found out that they used it for was writing down contracts, buisness documents, wills, lawsuites and tax dealings. And they language they wrote it in was demotic. No not demonic like devils but it was the there type of writing. And they had scribes write it down for them to. Because scribes where the only ones who could read and write.