Perhaps insanity is not too strong a word.
I’m not sure whether a pathenogenicly produced zygote is human or not, as I stated above. On the other hand, limited viability is a particularly narrow ledge on which to perch the claim on being human. Since we all die and some will certainly die at earlier stages than others, does their inability to survive to certain stages really determine their humanity? Certainly if you don’t agree that a person is a person no matter how small - from zygote on - then the inability to form a fetus might be of some import. Of course, what sort of creature was the embryo and zygote if not human? It’s not a cat or a dog. It’s not an insect. It seems to me it is a human being in a very early stage of development. Once we start denying the humanity of a human being for some reason, it’s a very short jump to denying humanity for another. History, to our shame, is replete with the denial that some people are human. I do not think insanity is too strong a word to use when we endeavor to deny humanity on the specious grounds of developmental viability.
