Ever since the early days of commercial aviation, flight safety has steadily improved. Considering the number of flights, accidents are now extremely rare, and 70% of them are attributable to human factors. This has led to research in psychology, cognitive science and, more recently, in neuroergonomics. Researchers have been investigating factors such as drowsiness, stress, attention, workload, communication, and cognitive biases. One that has been surprisingly overlooked is that of social relations within the cockpit.