preparing...yes. but preparation or potential human is not human.
Your argument would be valid if our hypothetical potential human were presently a wad of clay, but it is a cluster of cells with an essentially human genetic identity. If you reject the idea that a blastocyst is essentially human simply because it doesn't possess the same biological structures as the exemplar of a fully developed adult, then to be consistent you must reject
all theory-based views of categorization. Therefore--by the standards of your definition--the caterpillar who has only the
potential to become a butterfly is not, in fact, class
Insecta, order
Lepidoptera. Congratulations on destroying Linnaeus's life work in one fell, arbitrary swoop.
again, yes, we are an extraordinary large cluster of cells, but a large cluster that can think, live independantly, move, feel.... and actually has an identiy. A cluster of cells a couple days after conception is a totally different ball game. it has none of the above elements.
What if I am mentally retarded? Mildly? Moderately? Severely? Profoundly? At some point, my IQ gets so low that I don't meet your criteria of thinking and being able to live independently (and the diagnostic categories I've gone through are fairly arbitrary when this is a continuum anyway); is it okay to kill me when I reach that point? If I were brain damaged tomorrow, would it be okay for you to kill me? If I lost my legs in a car accident tomorrow, I would not be able to move; could you kill me then? What if I were an Antisocial Personality (a psychopath) and had no conscience or an autistic child with no theory of mind? In either case, I certainly wouldn't be able to "feel" for another person. Nor if I were blind or deaf would I be able "feel" in one of my sensory modalities. Would you kill me then? After all, I am lacking one or more of the characteristics that defines a human for you.
why not exteact it from the body and let it live on its own, if it can survive....great.
Before the Holocaust, the Nazi party convinced the German people it was okay to kill retards and the mentally ill because these people were not independent, could not survive without others to help them. They were weak, a tax on the human gene pool, and in Hitler's world, only the strongest and fittest deserved to live (he truly was an evolutionist first and a Norse paganist second). Are you prepared to adopt that same logic?
would you argue the same for a cell at the moment of conception?
Indeed I would. A zygote has a distinct genetic identity that is undeniably
Homo sapiens.
It is noone else's business what people choose to do with their bodies. Do you want your medical decisions publically debated? This is an issue for medical personnel only, not politicians.
A zygote/blastocyst/embryo/fetus has a genetic identity that is separate from the mother's. It is no more a part of her body than the dust mites in her eyelashes. Just as my property rights to a knife extend only so far as when I've decided to place that knife maliciously in your neck, your self-proclaimed "right" to your body extends only so far as when it intrudes on another life. And how does this "right" extend to a fetus but not to suicidal persons or trichotillomania patients? After all, if a person wants to kill himself or pull out all his eyelashes, that's his own business, isn't it? Clinical intervention's out of the question.