Iolo/Penderyn
Verified User
I think it's more like Sun Tzu, but longer. The main point is that expecting an epic poem to be verbally passed on over the campfire for several centuries and expecting it to remain 100% the same is, IMO, asking a lot of human nature.
It seems to have been universal, pre-printing. People used to be able to recite the whole Koran, or even the Bible, so I understand.