I love an in-depth post like this to get me thinking, thank you! (So much to learn, I do feel what you’re saying, @DesertDave :) )
There is so much to unravel in the story of Adam & Eve, and I tend to view it as the discovery of duality by humanity - not a negative event, just necessary to observe the world as we know it.
It is an interesting parallel that we use cos and sin mathematically to separate a force into orthogonal vectors. In a sense, applying duality to understand it more clearly.
Hopefully I’m following you.. I do believe we live in the Kingdom of God with sin (separation, duality) preventing us from seeing this (oneness, non-duality)