[Mrs. Don-o]

" Which means this system was in fact providing food for an average of about 5 Billion people."

Whoa. You can feed five billion people n an irrigated/aquacul;ture area the size f the state of Arizona?

Wha..?

SWhere was their water source?

When?

WHO?

And what happened to them?

And where are their descendants now?

So many questions.

[beebuster2000]

BS meter is pinging.

10,000 years old+, feeding 5 billion people?
i think not.