I've been trying to find a clear statement of the fall doctrine, but it is a bit difficult. Unfortunately Wikipedia's
Fall of Man is the closest I can find.
In Abrahamic religion, The Fall of Man, or simply The Fall, refers to humanity's fall from a state of innocent bliss to a state of sinful understanding.
I don't understand why going from innocent to knowledge is considered a fall. For our children that is an upward progression to maturity.
Even Genesis 3 states:
22 And the Lord God said, "The man has now become like one of us, knowing good and evil.
This doesn't sound like a downward movement. A&E already had the potential to sin before they gained the knowledge. The implication is that they just didn't know their actions could be considered wrong to those with the knowledge. (i.e. naked-ashamed) Just like a child until they are taught otherwise.
I thought this comment in the Wiki article concerning
Classical Biblical View of Original Sin was interesting.
Note that Adam and Eve are not expelled from the garden for their disobedience. Literally, the narrative reads that God did not want them to eat from the Tree of Life and so expelled them.
Which I think is what jar was saying or someone was earlier.
I agree that descendants would not get to live in the garden of Eden due to A&E's actions or eat from the Tree of Life, but I don't agree that A&E's actions as depicted in the story caused descendants to have any more potential for sin than A&E did. The descendants just know when they are sinning.
"Peshat is what I say and derash is what you say." --Nehama Leibowitz