>And it's almost certain the details got changed with each retelling!
As a former Classicist who studied this in grad school, I can say this is unequivocally false. Rhapsodes of the ancient world had a fairly established canon, by the time of Pisistratus it was in the form we know today. The meter and structure of the poem reinforced preserving its structure and contents so that rhapsodes could recite the poems fairly verbatim. I memorized book 1 of the Odyssey in Homeric Greek as a class assignment, it's actually not too hard, esp. if you do learn with the meter.
Hmm, well I'll defer to your expertise then, but if nothing else the language Homer used isn't even in use any more...how many people still read/listen to it in Ancient Greek? And I gather it was still many many centuries since those stories were first told before they were written down at all.
I'd also think memorizing something when you have a written-down text to refer to is one thing, whereas repeating a story you've only heard told verbatim is quite another.
As a former Classicist who studied this in grad school, I can say this is unequivocally false. Rhapsodes of the ancient world had a fairly established canon, by the time of Pisistratus it was in the form we know today. The meter and structure of the poem reinforced preserving its structure and contents so that rhapsodes could recite the poems fairly verbatim. I memorized book 1 of the Odyssey in Homeric Greek as a class assignment, it's actually not too hard, esp. if you do learn with the meter.