As Juan Manuel Fangio exited the chicane before the blind Tabac corner in the 1950 Monaco Grand Prix, he stomped on the brake. It was a counterintuitive reaction for a racing driver exiting a corner — but one that likely saved his life. By slowing down he avoided plowing into a multi-car pile-up, which was just out of sight beyond the turn. In racing folklore, Fangio’s evasive action is considered a miracle. But why did he slow down?