Zeca,
Homer clearly has origins that pre-date the Greek alphabet. Whether it’s actually true that the Greeks abandoned writing for centuries before reinventing it is another question.
So Zeca, what do you think? The Illyad is circa word for word Homer's composition?
scenario:
Homer recited the work a few times, a person with a perfect memory remembered it word for word. This person transmitted the work word for word to the next generation (spending A LOT of time teaching this, either the students also had perfect memory, or a lot of oral repetition was necessary with the teacher continuously present).
After a few 100 years and maybe 20 generation of in the best case , perfect memory students, or in the realistic case, gifted students with bright memories, needing also work to remember, the Greeks come up with the idea to write it down.
A committee of scribes is formed, the perfectly memorized Illyad is stenographed into writing, no or only limited redaction is made.
Realistic? (in a world where writing existed already in Homer's time...)