The indomitable Gauls, who never stopped resisting the Roman invader, were known to fear only one thing in their village in Aremorica: that the sky would fall on their heads. This fear is unfounded. From a statistical perspective, it is sleep that should be feared, because after all, a significant percentage of people die in bed. But even if the extremely rare and highly unlikely combination of both scenarios occurs, it doesn’t have to mean the end.