Comment: Well...

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Well...

...since the main characters have a memory wipe, you wouldn't expect much backstory for much of the movie, as you experience it from their perspective. Also, it keeps a compelling sense of mystery floating about the film to leave some things like the origin of the Tet unexplained. Sometimes overexplaining things can ruin a story. Also, I think even though you don't know a ton of detail about Jack's past, he represents well all of humanity trying to reemerge from being submersed in a fog, like new blades of spring grass showing through as winter thaws. It's like that fragile flower that he found and brought home -- a still tenuous awareness of self, even at the end. This film really had a sense of 'Jupiter' in struggle against 'Saturn', mythically speaking: the passing of 'winter into spring', the joy of goodness and beauty beginning to be restored in the face of death and decay.