@FreeDuck,
FreeDuck wrote:So many things are outside of my control in the streetcar scenario.
Well, no, not really. The hypothetical is set up so that you know everything you need to know in order to make a decision, so there's nothing left out (anyone wanting to see a discussion on the "trolley problem" can go
here). Furthermore, just because "kids can move faster than an old lady" doesn't absolve you from your choice if you end up running over them anyway. Your choice, in other words, must be premised on the
likelihood of killing either five people or one person. If you steer the trolley toward the single individual and she manages to jump out of the way at the last second, that doesn't make your decision morally better than if you ran her over, since the moral evaluation of your decision occurs when you make the decision, not when you learn the results (except maybe for act utilitarians). If you fire a gun at somebody, intending to murder that person, and the gun misfires, that doesn't make the act of firing the gun any less morally reprehensible.