Is this a possible use of 'CEV?' So far as I understand CEV, it's not possible that it could change
Yes. Society's behaviors and their CEV can get closer together without the CEV changing at all. Also note that while CEV is a (very slightly) different thing to CEV even though neither of those "CEVs" change at all.
A potential criticism of army's definition is that it allows for "cultural wireheading" and as such would be a lost purpose if "moral progress" was substituted in as a all-purpose goal or measure of achievement. (That said, I've never really thought of "moral progress" as that-which-should-be-optimised anyhow.)
(That said, I've never really thought of "moral progress" as that-which-should-be-optimised anyhow.)
Then why is "moral progress" a useful concept?
Here's the new thread for posting quotes, with the usual rules: