Someone else commented this on the thread, but my understanding is that some non-zero percentage (maybe even non-trivial percentage) of people without, say, a p

Someone else commented this on the thread, but my understanding is that some non-zero percentage (maybe even non-trivial percentage) of people without, say, a pulse can be revived only at a hospital but not by an EMT (because of equipment or skills, I guess?). This decision forecloses that possibility completely.