Interestingly enough, when I advanced a purely rational argument against it I was met with either silence or thinly veiled appeals to emotion in response, so I don't know that I've seen either side do more than assert subjective valuations, by which I mean no one can demonstrate more than that.
Considering the guesswork and assumptions involved, no one can make an absolutely rational case for personhood one way or another.
See, you're doing it again, assuming the conclusion and wrapping it in terms that are charged to that purpose.
I see, so referring to zygotes as "babies" and "children," as many are wont to do, isn't an intentional attempt at charging the discussion?
Are they, or aren't they?
Rather, we have a human entity, from tip to tail, chronologically, and the question then is at what point does right vest and at what point, looking back, can you divest me of mine?
I already explained when I believe we can say with confidence that "personhood" is absolutely and undeniably recognizable.
Now if your answer is an arbitrary assignment of value, you can apparently win the field looking forward, but the law wouldn't allow you to do that the other way around. And therein lies an unsupportable error that needs a harder look.
As is yours, remember. There is no clean-cut answer to this issue, leaving us with a) our assumptions, b) our heart strings, and c) our intuition. In other words, the issue is a complete mess. The difference with us, I think, is that you're unwilling to step backward in the chronology in the name of alleviating present suffering, and I am.
No. I have one, but my argument doesn't rest on it.
Well remember, what your argument
ultimately rests on is something I dismiss out of hand, so if you play that trump card, this discussion will go nowhere.
It's only unavoidable that we have an emotional response. The argument, as I've set out here and elsewhere, needn't be rooted in or reliant on it.
On this we agree.
I don't see how anyone could support the arbitrary ending of the inarguably human and be more than errant.
No one has argued (and I will not) that zygotes are not "human," but I defy anyone to make a case for its
personhood--for can you honestly say a cell that may not have even dropped into the fallopian tubes yet possesses the consciousness, rationality, self-realization, self-recognition, and fear of mortality that is part and parcel the human condition? One can only make this case by resorting to religious nonsense. Call the zygote what you like: a cell, potential, promise, the building blocks of a possible life, the parental blueprint; but don't insult my intelligence by equating a
cell with
personhood, especially when the amelioration of misery is at stake.
Just bending your rhetoric, but its a true statement. You end life as it suits you and so does a killer. Your values may be far more understandable and far less other than that killer, but they're no more or less arbitrary. And that should trouble you as a rational creature.
The only way an otherwise bright chap can come to this is through the madness and ethical dead-ends required of you by your religion. And while
that won't trouble you, it should.