I agree with everything non-linguistic If we get rid of words like right, wrong, and should, then we are forced to either come up with new words or use 'want' and 'desire'. The first option is confusing and the second can make us seem like egoists or like people who think that wireheading is right because wireheaded people desire it. To someone unfamiliar with this ethical theory, it would be very misleading. Even many of the readers of this website would be confused if we only used words like 'want'. What we have now is still far from optimal.
If we get rid of words like right, wrong, and should, then we are forced to either come up with new words or use 'want' and 'desire'.
...and 'preference' and 'value' and so forth. Yes.
If I am talking about current human values, I endorse calling them that, and avoiding introducing new words (like "right") until there's something else for those words to designate.
That neither implies that I'm an egoist, nor that I endorse wireheading.
I agree with you that somebody might nevertheless conclude one or both of those things. They'd be mistaken.
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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.