Much like Brad Pitt desperately waving a gun in the face of a serial killer, you might've watched today's highly-anticipated Dune trailer and thought to yourself: "What's in the box?" It certainly looks like Denis Villeneuve has crafted a gorgeous, ambitious sci-fi epic, but Dune—both book and, apparently, movie—is filled with terms, names, and lore that can whizz over your head if you're not already a studied Dune scholar. Case in point: The moment in the trailer in which Reverend Mother Gaius Mohiam (Charlotte Rampling) instructs Paul Atreides (Timothee Chalamet) to place …