The best sci-fi movies aren't defined by their sci-fi elements. Hovercars, cool guns, time travel and other sci-fi tropes are merely used to put a unique spin and visual style on a story with themes universal to almost any genre. And if it does that by blowing your mind with some cool stuff? All the better. Rian Johnson's Looper is very much in that vein. A time-travelling, sci-fi movie to be sure, ultimately the film ...