Let's see again when you actually enforce this by law and we can really talk about "rule". You could still argue that you endanger others by not doing 1000 othe

Let's see again when you actually enforce this by law and we can really talk about "rule". You could still argue that you endanger others by not doing 1000 other precautions, like going to medical school so you can use ballpoint pen to open the airway of that guy that chokes on airplane.