Joker:
Have you ever read anything by Daniel Quinn? he has written several books on this topic 2 of which i've read. They are very interesting. They are all about the hunter gatherer to agricultural revolution. He does it in a really neat way by having a Super intelligent gorilla that can communicate telepathically teach his students. "Ishmael" "my Ishmael" and "a tale of Adam" are three of the books, YOu should really check um out.

Back to the question of the sin. The original sin was eating from the tree of the knowledge of good and evil. After eating from the tree we became our own gods, we no longer left life up to nature(god) but instead started to do everything ourselves(agriculture). Only since the agricultural revolution has our population sky-rocketed and starvation and mass disease become an issue. The agricultural revolution led to the over population of earth which will eventually lead to the annihilation of man kind. If we had stayed with the hunter gatherer life, society/civilization would have still advanced but probably in a more environmental and peaceable way.

Check out those books

__________________
"People should not be afraid of their governments. Governments should be afraid of their people." -V