I wonder if in many cases, as time goes on with Oral History, some embellishment creep in, like the sirens of Odysseus. I tend to think yes. I one difference

I wonder if in many cases, as time goes on with Oral History, some embellishment creep in, like the sirens of Odysseus. I tend to think yes. I one difference is written history probably does not change much over the years. Also, how many oral stories/histories have been completely lost throughout time ? Where if written down, it is possible something could eventually be found. I think I read somewhere, lots of books are being coded into a media that will last for millions of years. Hopefully that is happening :)