Nicely done CP! I agree with what you just stated. However, I was think more along the lines that the entire story took place as jack lay dying in the bamboo field right after the plane crash. I'm thinking they all died in the crash and were in various stages of acceptence/denial.......Hence the Jacob's Ladder dying on the operating table comparison.

I am also think that the Island was some kind of purgatory for people that died on or near the island. people like Richard Alpert have been dead and dwelling the island for over a 100 years. still not ready to let go/understand but does not age. Desmond died there in the 70's. People like the French gal still cannot let go therfore were not in the church.

Jacob and the man in black were "guides" for people struggling with their issues in life in order to let go. Once they see the light they are set free sort of thing. hence, 6th sense comparison.

CP, I think you are spot on with your science faith progression of Jack.

anyways. that is the best I can do as far as an analysis