and that 's why it 's a good thing i do n't know where to lay my hands on her , because no one knows exactly how things like this get started ; they argue about that and they finally lose the truth altogether if it 's inconvenient , but everybody knows how they keep on keeping on : they take one , we take one , then they take two , and we take three ... they shoot up an airport so we blow a school ... and blood runs in the gutters .