I believe Rolf has excommunicated psychopaths (and Clippy) from the set of agents from whom "human morality" is calculated.
First they purged the psychopaths...
Me, I don't think everyone else converges to the same conclusions. All non psychopaths just aren't all made out of the same moral cookie cutter. It's not that we have to "figure out" what is right, it's that we have different values. If casual observation doesn't convince you of this, Haidt's quantified approach should.
This is a thread where people can ask questions that they would ordinarily feel embarrassed for not knowing the answer to. The previous thread is at close to 500 comments.