I don't believe in souls; I just assumed you were about to argue from a religious standpoint, perhaps mistakenly. If a person is not experiencing their situation and they have 0% chance of regaining consciousness, I still stand by that criteria. If they are not sentient, if they do not dream, if they simply exist without thought or joy or fear, and the state is indefinite, there is no personhood left of them. And I never used the word "conscience," only "consciousness." You can substitute it for sentience if you wish, but I never emphasized conscience. I disagree that sentience (switching to that word choice) being the criteria results in totally relative morals; if killing that which is sentient is objectively wrong, and if I am correct in that value, then that is how I would argue- within those parameters. You might argue "because it's human," but I argue "because it's sentient," which functionally assumes that I extend my values to animals. Objectivism doesn't have to mean you take the broad strokes of something and call it all wrong; it means that something must be wrong at least in a fixed parameter, and that no coinciding parameters can change the context of it being wrong. Relativism argues that people decide what is right and wrong per their culture and must therefore respect the values of another culture because it is what they chose for themselves. Objectivism can still place a fixed condition under which an act is wrong. "All killing is wrong," is objectivist in its most extreme, but, "Murder is wrong," could also be an objectivist phrase, which preconditions killing as acceptable in self-defense, for example. Just because I deviated from the broad stroke (killing) does not mean that the subsequent value is subjective.