Yahtzee Croshaw said:
Would you rescue one baby or five old people?
I read an interesting story about that once actually, you are standing near a switch, there is a train coming in, on one set of rails is fat man, on the other there are 5 people, if you pull the switch the fat man dies, if you don't the 5 people live.
Most people say they would pull the switch, 5 for 1 and all that jazz.
Now same situation, only there is no switch, and the only way to stop the train from hitting the 5 people is to throw the fat man in front of it (just roll with it).
Would you still do it? Most people say no, but morally it's the exact same choice, trading one life for five, you're hands are just a little dirtier.