With pout revealed truths and the entry of God into our world, we would be at the mercy of nature. A clone would not have the identical wiring diagram. I thought the question was that the wiring needed something more than the physical, the genes. I am confused. Even if the word sin means nothing to them, that is not the issue.
Sin prevents that.
To them the words sin, evil have no meaning and is used by stupid people who believe in spiritual matters. Evolution is necessary but not sufficient for people to believe that they may be superior to others. I know in my own flesh what you are talking about. It is not the theory that brings the bad, but the sin.