Ping.
Thanks for the ping. The findings are interesting, and the speculations are amusing. If the story of Eden is a racial memory, it is a memory of a long-ago time when there was plenty of food and not many people.
Hunting and gathering is a sustainable lifestyle only for a relatively small population in relatively a large area. A rich area may be a paradise for awhile, but population increase will eventually exhaust the local food supply.
It was only when people domesticated crops and cattle that population density could increase significantly, and they had enough food to feed the people who built temples.
The human race is still a race between food production and reproduction. For example, 1850's food production technology would feed only a small fraction of the 300 million people now in this country.