Victory in Vomit: The Sickening Secret ofA surprisingly simple neurological trick turns the parkour-based videogame into a heaving success. Commentary by Clive Thompson. Mirror's Edge Screenshot courtesy Electronic ArtsBy now you have probably heard the warning: Playing Mirror's Edge will make you vomit. The hot new videogame is a sort of "first-person runner": You're a courier who travels across the rooftops of a locked-down, police-sta
