The easy little point there Tpaine, was that some people do not believe hurting others is bad, and they don't get the idea that it is (as you say is common sense) in situations in which those that are harmed can't strike back. Stalin acheived all of his immense goals and more. The millions he killed never had a chance to strike back. On his own terms, he was quite successful. At the end of the day, Tpaine, you wish to establish morality from rationality, like Rand. That's a futile exercise.