prusit of truth as an example will show that morality is not relative. Instead, universal morality exists, but not all cultres are aware of it. Rachels gives the example that some societies believe thayt the earth is flat, however we bleieve that the earth is round. Rachels uses this to show that the underlying fact is simply that they disagree. He further states "there is no reason to thing that if the world is round everyone must know it. Similarly , there is no reason to thing that if there is moral truth everyone must know it". ...
