Tom,
Imagine that writing hasn't been invented yet....now, tell me who your great great great grandparents were. All 16 of them, their names and the names of all their children and all their children's children. Who were their parents (32 of them) and their parents (64), etc. Remember, writing hasn't been invented yet, no birth records or family letters, or newspapers etc. I have been working on my family history for several years and even with birth, marriage, death records, immigration records and all other kinds of WRITTEN records, I am having difficulty getting past my 2x great grandparents and I don't even have names for most of them. I only have 8 2x great grandparents and I have names for TWO of them.
We are talking 150 year time span and written and recorded information. Now you explain how 6000 years ago humans were suppose to know who their ancestors were 6000 years before that, or 20,000 years, or 50,000 years.
It's not like one day we had ape like ancestors and the next "POOF" the children born were all fully modern humans with a fully modern-like language, and fully capable of remembering and passing on information on each and every generation.
I could sit here right now and write a genealogy for myself, using facts as far back as I can remember and then "making up" the rest to fit with my world view that I am the direct descendant of the first man "George" and as such am blessed by "George's" creator. Two thousand years from now when someone reads this, does it make it all true, considering that some of it can be historically verified?
------------------
Asgara
"An unexamined life is not worth living" Socrates via Plato