Whether one describes it as either logic or common sense in the context that i have suggested is a moot point. My point was to illustrate is that common sense (logic) when used in an argument is fascile in that the term is too abstract - in the same way that words like "terrorism", "liberty", "democracy", "freedom" are. Marx's and Einsteins critique of "common sense" and the people that blindly use it in arguments, stand.