A group of children were playing near two railway tracks, one still in use while the other unused. Only one child playing on the unused track, the rest of them on the operational track.The train is coming, and you are just beside the track interchange. You can make the train change its course to the unused track and save most of the kids. However, that would also mean the lone child playing by the unused track would be sacrificed. Or would you rather let the train go its way?