Agreed that on EY's view (and my own), human "fundamental values" (1) have not yet been fully articulated/extrapolated; that we can't say with confidence whether X is in that set.
But AFAICT, EY rejects the idea (which you seem here to claim that he endorses?) that an AI with a simple utility function can be sure that maximizing that function is the right thing to do. It might believe that maximizing that function is the right thing to do, but it would be wrong. (2)
AFAICT this is precisely what RichardChappell considers implausible: the idea that unlike the AI, humans can correctly believe that maximizing their utility function is the right thing to do.
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(1) Supposing there exist any such things, of which I am not convinced.
(2) Necessarily wrong, in fact, since on EY's view as I understand it there's one and only one right set of values, and humans currently implement it, and the set of values humans implement is irreducably complex and therefore cannot be captured by a simple utility function. Therefore, an AI maximizing a simple utility function is necessarily not doing the right thing on EY's view.
Sorry, I meant to use the two-place version; it wouldn't be what's right; what I meant is that the completely analogous concept of "that-AI-right" would consist simply of that utility function.
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.