INteresting link Ed. I don’t subscribe to YouTube so cannot comment, but you might want to make the very point above that the wars increase dramtically ffrom the point of the industrial revolution as not only the basis of war switches to domination for markets but also the machinery of war becomes that much ‘better’ at what it does, i.e. kill people. Its also noticeable that in so called ‘backward’ countries where many people live lives based far more on co-operation, that there are far fewer notable fights.