Quote Originally Posted by The Stranger View Post
well i believe that objectivity cannot be achieved. but when you say that morals are objective and murder, rape, lying, wearing fur is always wrong no matter how some cultures or some eras have thought about it, then you will need to have absolute certainty because you are talking about absolute and universal values. and if you claim those values are objective no matter what than you gotta prove your claim beyond all reasonable doubt because if you dont it can always be asked How do you know that what you say is the truth and can you prove it to be so.
It's objective whether I'm sitting on a chair or not but I don't need absolute certainty in order to be justified in claiming that I am sitting on a chair. And if I am justified in believing it and it's true then I know that I am sitting on a chair. So clearly I can know things without having absolute, Cartesian certainty. So I can also know that murder is wrong. The possibility of moral knowledge is what's important.