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, then we will no longer want what is right... though if you ask us then, we'll say we want what is right, again using the same cognitive operations. (Again, in that case we would be mistaken.)
And if there turn out to be two groups of humans who want incompatible things (for example, because their brains are sufficiently different), then whichever group I happen to be in wants what is right, and the other group doesn't... though if you ask them, they'll (mistakenly) say they want what is right, again using the same cognitive operations.
All of which strikes me as a pointlessly confusing way of saying that I endorse what humans-sufficiently-like-me currently want, and don't endorse what we used to want or come to want or what anyone else wants if it's too different from that.
Talking about whether some action is right or wrong or moral seems altogether unnecessary on this view. It is enough to say that I endorse what I value, and will program FAI to optimize for that, and will reject moral arguments that are inconsistent with that, and etc. Sure, if I valued something different, I would endorse that instead, but that doesn't change anything; if I were hit by a speeding train, I'd be dead, but it doesn't follow that I am dead. I endorse what I value, which means I consider worlds in which there is less of what I value worse than worlds in which there is more of what I value -- even if those worlds also include versions of me that endorse something different. Fine and dandy.
What is added to that description by introducing words like right and wrong and moral, other than the confusion caused by people who assume those words refer to a magic light from the sky? It seems no more useful, on this view, than talking about how certain acts are salvatory or diabolical or fleabag.
If the people a thousand years ago might have wanted what is right, but were mistaken as to what they really wanted. People do not understand their own brains. (You may agree with this; it is unclear from your wording.) Even if they really did have different desires they would not be mistaken. Even if they used the same sound - 'right' - they would be attaching a different meaning to it, so it would be a different word. They would be incorrect if they did not recognize our values as right in Eliezer-speak.
This is admitted a nonintuitive meaning. I do not k...
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.