Which of our developments (drop slavery, stop admiring Sparta etc.) were in our CEV "from the beginning"?
People disagree about that, and given that it has political implications (google for "moral progress") I dare no longer even speculate about that.
I agree with your premise, I should have talked about moral progress rather than CEV. ETA: one does not need a linear order for the notion of progress, there can be multiple "basins of attraction". Some of the dynamics consists of decreasing inconsistencies and increasing robustness.
Thought experiment:
Through whatever accident of history underlies these philosophical dilemmas, you are faced with a choice between two, and only two, mutually exclusive options:
* Choose A, and all life and sapience in the solar system (and presumably the universe), save for a sapient paperclipping AI, dies.
* Choose B, and all life and sapience in the solar system, including the paperclipping AI, dies.
Phrased another way: does the existence of any intelligence at all, even a paperclipper, have even the smallest amount of utility above no intelligence at all?
If anyone responds positively, subsequent questions would be which would be preferred, a paperclipper or a single bacteria; a paperclipper or a self-sustaining population of trilobites and their supporting ecology; a paperclipper or a self-sustaining population of australopithecines; and so forth, until the equivalent value is determined.