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You were not an egg cell or sperm cell? But certainly, your entire existence is entirely to their credit. And yet you were a blastocyst? It seems to me that’s an arbitrary place to draw a line–the place at which 2 haploid cells become a single diploid cell. Why should that be any more “me” than the two cells that fused to form it? Why should it be as much “me” as the fetus that developed from it? It’s a line that can be drawn in a number of places, and if you held a gun to my head, I’d have to say I don’t really identify much with a blastocyst. That’s not who I am. Maybe it’s what I came from, in the same way I came from male and female gametes, or chimpanzees, or chordates, or colonial choanoflagellates, if you want to take it really far back. I believe I had the potential to have been a great athlete–if I’d practiced every day. But make no mistake–I was not and am not a great athlete. IVF embryos have the potential to become human life–if they hadn’t been generated outside of a human womb.
And surely, the development of the blastocyst is not inevitable, in that any number of factors can cause its premature termination, accidental or otherwise.
I’m quite sure I won’t change your mind about this, but if it’s all the same to you, I enjoy arguing about it anyway. It helps me examine my own beliefs, and so even if you don’t see the point to this kind of sparring, I like to think there is one. If its merely irritating to you, I apologize, but I really do get something out of it.
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No, it’s not irritating, I kind of enjoy it myself. It’s the tone of some peoples’ questions I sometimes find annoying.
Here’s the thing. I do not believe conception is an arbitrary place to draw the line. The reason I am pro-life is because I was trying to figure out where a reasonable place TO draw the line is. I started with a full-term baby, and went back through the 9 months to logically try to figure out where the magical moment was that the fertilized egg became…a baby.
Is it at the moment of birth? No, couldn’t get with that. If it was literally about to be born, then it is essentially the same thing as a baby that has been born.
So is it viability? No, for the same reason as above, and because viability is being pushed back further and further until goodness knows we might not even NEED a uterus to have babies in the future.
So, is it when it starts to look like a baby? That doesn’t work for me…I just see that as another stage of human development. My daughter is 2 now, and doesn’t look like an adult…she looks like a toddler. It’s just a stage.
So, is it the first trimester? That seems completely arbitrary to me.
So when is it? As far as I can see logically, before conception, you have a sperm cell and an egg cell. Once they join, you have the complete DNA that a human adult has…just at a different stage of development. As I said, that blastocyst will not become anything but a human…it is an inevitable progression, as long as nothing interferes with it. A sperm by itself will never do that. An egg by itself will never do that. A non-human blastocyst will never do that. So, although I see your point about it being hard to relate to being a blastocyst, I think it is hard to deny that YOU were never just a sperm or an egg cell, but you WERE a blastocyst. Once it formed, it inevitably became YOU…not me, or a frog, or a sea urchin. It became you, a unique human.