I don't think "the safest mode of travel just became unsafe" is really what is going on. If 400 people die in a single incident, it doesn't matter so much what

I don't think "the safest mode of travel just became unsafe" is really what is going on. If 400 people die in a single incident, it doesn't matter so much what people's association of how safe what they are doing is. If that many die in a fire, or a ship sinking, or a flood, or whatever.... the reason we care is because it is a singular event.