We can know what is Right, as long as we define it as "right according to human morals." Those are an objective (if hard to observe) part of reality. If we built an AI that tries to figure those out, then we get an ethical AI - so I would have a hard time calling them "subjective"

I don't dispute the possibility that your conclusion may be correct, I'm wondering the basis under which you believe your position to be correct. Put another way, why are moral truths NOT relative? How do you know this? Thinking something can be done is fine (AI, etc.), but without substantiation it introduces a level of faith to the conversation -- I'm comfortable with that as the reason, but wondering if you are or if you have a different basis for the position.

From my view, moral truths may NOT be relative, but I have no basis for which to know that, so I've chosen to operate as if they are relative because (i) if moral truths exist but I don't know what they are, I'm in the same position as them not existing/being relative, and (ii) moral truths may not exist. This doesn't mean you don't use morality in your life, its just that you need to have a belief, without substantiation, that those you subscribe to conform with universal morals, if they exist.

OK, i'll try to search for those EY writings, thanks.