An in another way, I mean in the first situation you're involved directly with the situation in the second one you're an onlooker as well.

This time you're not the driver of the trolley car, you're an onlooker standing on a bridge overlooking a trolley car track and down the track comes a trolley car at the end of the track are five workers the brakes don't work the trolley car is about to careen into the five and kill them and now you're not the driver you really feel helpless until you notice standing next to you