"A trolley is hurtling down a track towards five people. You are on a bridge under which it will pass, and you can stop it by dropping a heavy weight in front of it. As it happens, there is a very fat man next to you - your only way to stop the trolley is to push him over the bridge and onto the track, killing him to save five. Should you proceed? "
Doing nothing would mean nothing happens I think. It was not you who pushed (or lost control over) that trolley, and those 5 people are not your responsibility. Pushing the fat guy onto the track and killing him would probably get you arrested for murder (although the punishment will probably quite light, mitigating circumstances) in the western society. Killing people is in the books of law and means jailtime. Saving people isn't and thus won't save you from that jail time, right? That side of the story I wouldn't find very interesting. The public opinion would be more exciting. Some would think psoitive about it, some negative. But who and in what way and what effect do those different attitudes have on you and your adventure. Let go your imagination.
