I wouldn't limit "people who don't understand science" to "religious fundamentalists," so I don't think we really disagree. A huge amount of people find evolution to be controversial, too, but I wouldn't give much credence to that "controversy" in a serious discussion.

Okay, let me make my claim stronger then: A huge amount of people who understand science would find the truncated version of TML described above controversial: A big fraction of the people who usually call themselves moral nihilists or moral relativists.

The quantum numbers which define an electron are the same whether you're a human or a Pebblesorter. There's an objectively right answer, and therefore objectively wrong answers. Convictions/terminal values cannot be compared in that way.

I'm saying that there is an objectively right answer, that terminal values can be compared (in a way that is tautological in this case, but that is fundamentally the only way we can determine the truth of anything). See this comment.

Do you believe it is true that "For every natural number x, x = x"? Yes? Why do you believe that? Well, you believe it because for every natural number x, x = x. How do you compare this axiom to "For every natural number x, x != x"?

Anyway, at least one of us is misunderstanding the metaethics sequence, so this exchange is rather pointless unless we want to get into a really complex conversation about a sequence of posts that has to total at least 100,000 words, and I don't want to. Sorry.