The word I'd use to define this story is contorted..Nolan's intelligence is out of discussion but the problem here is the difficulty of finding a key. All of this effort, all these questions, all of this movie and for what? There is no answer there. Nolan's mind has conceived Memento, The Prestige, Inception, and now Interstellar, always exploring relevant existential questions but there's always the sense that the person making these movies has no sense of proportions. The movies are about love, they're spiritually generic and require a lot of production.. But the overall idea is that the viewer doesn't know where the story is going.. Again the previous question, what for..?!