So if you had a chance to save somebody's life, only there was a 75% chance that you would die in the process would you do it? How about a 50% chance that you would die while saving them? 25% chance? Let's say for simplicity that in each of the above scenarios the person is guaranteed to be saved. It's only you that has a chance of not making it. Where would you draw your line between personal safety and saving the life of somebody else? Let's say a total stranger? You can also answer the question as if it were a friend or family member as well if you want. I'd do it. I think if I had a plain as day chance to save somebody's life it would be worth trying.