To show that I am actually trying to help the thought experiment, here's one that was actually posed to my wife in an ethics course:
You are a triage nurse, and are assessing serious injuries to a family of six involved in an auto accident. One individual is in serious condition, but has no organ damage outside of possible brain damage. The other five individuals are all in critical condition, each with injuries that will require organ replacement, and would be compatible with the sixth, who is an organ donor. Do you treat the five at the expense of the one possible brain injury, or do you treat the one you know will survive without the more drastic measures?