“Self-aware” is a shorthand phrase, I think, for what we’re really talking about, which is: you can’t have a right to be free from that which you cannot experience.
That is, I have no right to be free from psychic attacks, since I cannot (to the best of my knowledge) experience a psychic attack. I have no right to be free from voodoo curses for the same reason.
I do have a right to be free from other folks making my medical decisions for me, since their making those decisions has a measurable impact: it keeps me from making those decisions myself. Were I in a coma and lacked a living will, then I’d no longer have that right, since denying my right to make medical decisions has no impact on me. I can’t make my own medical decisions anyway in that condition.
Killing something is bad for at least three reasons:
- It goes against the entity’s desires;
- It destroys the entity’s personality;
- It causes pain.
I’d say that, if none of these reasons exist in a particular killing, there’s likely to be nothing unethical about the killing (absent other conditions–if I burn down your ficus in revenge for an imagined slight, that’s unethical, but that’s also tangential to this discussion).
But in almost all cases in which we discuss killing humans, it violates at least one of the above. A neonate has desires, desires that are violated by killing it. Even if you kill the neonate in a completely painless fashion; even if the neonate has no personality, you’re still violating its desires.
A fetus about to be born? I don’t know if it’s got desires or a personality, but medically, it seems pretty likely that it has both. Its brain development is pretty far along by that point.
A blastocyte? It seems incredibly unlikely that it has desires, personality, or the capacity to feel pain. Nothing is being violated by killing it.
“Self-aware” is shorthand for these things, and more besides.
Yes, I acknowledge that this causes difficulties regarding our relations to other species. While I’m not an animal rights advocate in the common sense of the phrase (i.e., I don’t believe eating meat ought to be illegal), I acknowledge that this is a troubling, unresolved issue in my ethics. However, the fact that it’s a troubling issue doesn’t mean that the principle is flawed; it may equally mean that my rejection of animal rights is flawed.
Daniel