Reading the book and film together shows that Dune adapts only the first major movement of the novel Dune, so the stopping point matters as much as the omissions. The comparison clarifies political terms, combined characters, and Paul's unfinished movement into Fremen life.
PlotGeeks note
The film reduces internal narration and lets scale, sound, and ritual communicate the danger of prophecy. That makes Paul's power immediately legible while leaving more of the novel's suspicion about heroic destiny for the continuation.
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