Say this for The Platform 2: it gets right to it. Without so much of a recap of its predecessor – a sci-fi horror parable that became a Netflix hit a few years back – characters are debating philosophies of law and economics inside of 10 minutes. By the 40-minute mark, a major character has already committed self-immolation. It’s remarkably fast-paced for a movie set in a series of unadorned rooms that make up an enormous vertical prison…