(...) In standard metaethical terms, we have managed to rescue ‘moral cognitivism’ (statements about rightness have truth-values) and ‘moral realism’ (there is a fact of the matter out there about how right something is). We have not however managed to rescue the pretheoretic intuition underlying ‘moral internalism’ (...)
I think this issue has been discussed at length and repeatedly on LW, leading to a weak consensus that at least strong moral realism isn’t true.
Can anyone supply links to some other good posts on the topic?
Yudkowsky has written about it: