dreamer1982 said:
I'm still waiting to hear the fantastical refutation.
Here is one refutation, if I may. This is a portion of an article by Greg Koukl of Stand to Reason.
The key question in any slippery slope appeal is whether the two situations are truly similar in a morally relevant way. If not, then the illustration is guilty of a logical slippery slope fallacy. The analogy fails and the argument falls apart.
Are there important differences between pregnancy and kidnapping? Yes, many.
First, the violinist is artificially attached to the woman. A mother's unborn baby, however, is not surgically connected, nor was it ever "attached" to her. Instead, the baby is being produced by the mother's own body by the natural process of reproduction.
Both Thompson and McDonagh treat the child--the woman's own daughter or son--like an invading stranger intent on doing harm. They make the mother/child union into a host/predator relationship.
A child is not an invader, though, a parasite living off his mother. A mother's womb is the baby's natural environment. Eileen McDonagh wants us to believe that the child growing inside of a woman is trespassing. One trespasses when he's not in his rightful place, but a baby developing in the womb belongs there.
Thompson ignores a second important distinction. In the violinist illustration, the woman might be justified withholding life-giving treatment from the musician under these circumstances. Abortion, though, is not merely withholding treatment. It is actively taking another human being's life through poisoning or dismemberment. A more accurate parallel with abortion would be to crush the violinist or cut him into pieces before unplugging him.
Third, the violinist illustration is not parallel to pregnancy because it equates a stranger/stranger relationship with a mother/child relationship. This is a key point and brings into focus the most dangerous presumption of the violinist illustration, also echoed in McDonagh's thesis. Both presume it is unreasonable to expect a mother to have any obligations towards her own child.
The violinist analogy suggests that a mother has no more responsibility for the welfare of her child than she has to a total stranger. McDonagh's view is even worse. She argues the child is not merely a stranger, but a violent assailant the mother needs to ward off in self-defense.
This error becomes immediately evident if we amend Thompson's illustration. What if the mother woke up from an accident to find herself surgically connected to her own child? What kind of mother would willingly cut the life-support system to her two-year-old in a situation like that? And what would we think of her if she did?
Blood relationships are never based on choice, yet they entail moral obligations, nonetheless. This is why the courts prosecute negligent parents. They have consistently ruled, for example, that fathers have an obligation to support their children even if they are unplanned and unwanted.
If it is moral for a mother to deny her child the necessities of life (through abortion) before it is born, how can she be obligated to provide the same necessities after he's born? Remember, Thompson concedes that the fetus is a person from the moment of conception. If her argument works to justify abortion, it works just as well to justify killing any dependent child. After all, a two-year-old makes a much greater demand on a woman than a developing unborn.
Thompson is mistaken in presuming that pregnancy is the thing that expropriates a woman's liberty. Motherhood does that, and motherhood doesn't end with the birth of the child. Unlike the woman connected to the violinist, a mother is not released in nine months. Her burden has just begun. If Thompson's argument works, then no child is safe from a mother who wants her liberty.
In the end, both Thompson's and McDonagh's arguments prove too much. They allow us to kill any human being who is dependent upon us, young or old, if that person restrains our personal liberty.
The simple fact is, in a civilized society no one has the freedom to do whatever she wants with her own body. Liberty unfettered by morality is the operative rule of anarchy, not civilization. At any given moment, each of us is constrained by hundreds of laws reflecting our moral responsibilities to our community. The most primal of those rules is the obligation of a mother to her helpless child. This is one of the reasons the public outcry against Susan Smith was so intense.