> we as a society realize how futile it is to exert physical dominance on one another A more cynical explanation may say it only disappeared was because we dis

> we as a society realize how futile it is to exert physical dominance on one another A more cynical explanation may say it only disappeared was because we discovered the more /effective/ way to exert dominance on others was mentally, not physically. It wasn't due to any collective enlightenment about the sociological futility of domination -- it was merely a desire to achieve better logistics.