Eliezer believes that you desire to do what is right. It is important to remember that what is right has nothing to do with whether you desire it. Moral facts are interesting because they describe our desires, but they would be true even if our desires were different.
In general, these things are useful for programming FAI and evaluating moral arguments. We should not allow our values to drift too far over time. The fact that wireheads want to be wireheaded is not a a valid argument in favour of wireheading. A FAI should try to make reality match what is right, not make reality match people's desires (the latter could be accomplished by changing people's desires). We can be assured that we are acting morally even if there is no magic light from the sky telling us that we are. Moral goals should be pursued. Even if society condones that which is wrong, it is still wrong. Studying the human brain is necessary in order to learn more about morality. When two people disagree about morality, one or both of them is wrong.
Sure.
And if it turns out that humans currently want something different than what we wanted a thousand years ago, then it follows that a thousand years ago we didn't want what was right, and now we do... though if you'd asked us a thousand years ago, we'd have said that we want what is right, and we'd have arrived at that conclusion through exactly the same cognitive operations we're currently using. (Of course, in that case we would be mistaken, unlike the current case.)
And if it turns out that a thousand years from now humans want something different, t...
In You Provably Can't Trust Yourself, Eliezer tried to figured out why his audience didn't understand his meta-ethics sequence even after they had followed him through philosophy of language and quantum physics. Meta-ethics is my specialty, and I can't figure out what Eliezer's meta-ethical position is. And at least at this point, professionals like Robin Hanson and Toby Ord couldn't figure it out, either.
Part of the problem is that because Eliezer has gotten little value from professional philosophy, he writes about morality in a highly idiosyncratic way, using terms that would require reading hundreds of posts to understand. I might understand Eliezer's meta-ethics better if he would just cough up his positions on standard meta-ethical debates like cognitivism, motivation, the sources of normativity, moral epistemology, and so on. Nick Beckstead recently told me he thinks Eliezer's meta-ethical views are similar to those of Michael Smith, but I'm not seeing it.
If you think you can help me (and others) understand Eliezer's meta-ethical theory, please leave a comment!
Update: This comment by Richard Chappell made sense of Eliezer's meta-ethics for me.