 When we first describe the doing/allowing distinction, it is tempting to use standard doings and standard allowings of harm as examples. In standard doings of harm, the agent performs some action, setting some physical forces in motion which then run to the victim: Bob pushes a boulder which rolls down the hill and crushes Victor to death; Bystander pulls a lever turning the trolley towards the one. In standard allowing, the agent does not perform some action, refusing to intervene in some harmful sequence. 