I once wrote a paper on sed subject, only to be thrown out of a room. It amazes me how many people consider themselves human and not animals. After all we evolved as apes, at the end of the day we are just animals with golden rules.
but don't those rules make a difference are they what keep us from our animal nature or is it something else the ability to question? the ability to communicate complexly the ability to empathise what then makes us human