Dune Is Almost Entirely Faithful to the Books — Here Are the 9 Key Differences

The universe of Herbert's Dune is immensely intricate at times. While there's a deluge of complex terminology in the novel, not everything makes it into the movie. One notable absence is the mention of a Mentat — a class of Imperial citizens trained for supreme accomplishments, or "Human computers" with evolutionary analytical and computational powers of veritable degree — despite showing two Mentats in the movie (Thufir Hawat of House Atreides and Piter De Vries of House Harkonnen).