I'm pretty sure the moral choice was easy at first -- of course you help! -- and then got harder as there were more and more tragic outcomes, until it swung all the way to becoming an easy "no." It is morally correct, perhaps mandatory depending on your beliefs, to value your own life as much as another person's, especially one climber valuing his own life as much as another's. You have to balance the odds of dying yourself against the odds of saving another person. Plus, under those conditions you would be risking several lives -- an entire team -- on helping a single person who has a slim chance of survival, in a situation where the rescuers have little more strength than what is required to sustain and control their own bodies. This assessment might be considered unduly pessimistic if there were not plenty of deadly history supporting it, but there is. Therefore, it seems like an easy decision to me. Not that it matters what I think, since I'll never be there to make it!