for those on this thread - a little more complete argument -
ARGUMENT FOR THE FUTURE VALUE
Mostly stolen with some adaption from Dr. Don Marquis
P1. One definition of murder is the loss of one’s future of value
Any discussion on abortion needs to start with some theoretical account of the wrongness of killing. I would imagine most on here would have no issue with the assertion it is morally impermissible to, without justification, kill adult human beings like us. But why is it wrong to kill people like us? While we may want to suggest it is the loss others would experience due to our absence. But if that was all it was, it would allow the killing of hermits, or those who lead otherwise independent or friendless lives. A better answer would be the primary wrong done by the killing is the harm it does to the victim. The loss of one’s life is one of the greatest losses one can suffer. However is it simply the change in a biological state that make killing wrong? That seems insufficient. The effect of the loss of my biological life is the loss to me of all those activities, projects, experiences, and enjoyments which would otherwise have constituted my future personal life. These activities, projects, experiences, and enjoyments are either valuable for their own sake or are means to something else that is valuable for its own sake. Some parts of my future are not valued by me now, but will come to be valued by me as I grow older and as my values and capacities change. When I am killed, I am deprived both of what I now value which
would have been part of my future personal life, but also what I would come to value. Therefore, when I die, I am deprived of all of the value of my future. Inflicting this loss on me is ultimately what makes killing me wrong. This being the case, it would seem that what makes killing any adult human being prima facie seriously wrong is the loss of his other future.
P2. From a very early point in a pregnancy there is a unique human organism.
After the process of conception is completed there exists a new zygote cell. This cell has a unique genetic makeup. This zygote is an embryonic stem cell with the ability to generate every organ in the body. For the next 2 weeks or so, or until it is at the 16 cell stage it has the ability to split and twin. After this time, there exists a unique human organism, and this organism can only develop into a human.
P3. All adult humans undergo the same process of development
Currently, there is no other way to become an adult human being, than to start as a human ovam, and a human sperm, to undergo the process of conception and fertilization and the various stages of embryonic development leading to a birth of some type.
P4. Each human being on the planet can directly trace their past as a biological creature on earth from now back to their unique human organism as defined in P2
P5. All things that are part of a unique past time line as defined in P4, where at one time a future on the same time line.
P6. If P5, all human organisms as defined in P2 are on a unique time line that encompasses their unique human future much like ours
P7 One’s awareness or desire for one’s future of value does not impact the moral permissiveness of taking it as in P1.
One is in possession of one’s biological future whether or not one is aware of it or not. One is possession of ones one’s future of value even if one ( in most cases) does not desire it. As an example there can be a seriously depressed person, who do to the nature of their illness wishes to kill themselves and have no desire for their future. I would argue that it is not morally permissible to allow them to kill themselves because their judgement that their future is without value is handicapped by their illness. The concept of “ideal desire” would apply, and our judgement on the moral permissibly of them killing themselves should be based on what their ideal desire would be if their handicap was not there, and we would assume absent their depression they, like us would desire their future. In the second instance assume there was a person is a catatonic state, but with the real prospect of regaining conciseness, we could not say, that since this person is unaware of their future at that time, they are not in possession of it, the concept of ideal judgement would apply, and we should assume that if they were conscience they would be aware of their future and we should not let the handicap of the catatonic state deny them of their right to it. I argue that the same concept of “ideal desire” applies in the case of the fetus, and their handicap of the state of their development is not philosophically different then the prior 2 examples and we should assume that absent this handicap they would be aware, and desire their future of value as we do.
Conclusion
If P1 and one definition of murder is the loss of ones future of value and if P6 Shortly after the process of conception is complete, and very early in human development there is a unique human organism with a unique human future, and if P7 their awareness or desire for this future is not a condition of their possession of this future, taking of this human future of value is murder, and immoral.
Exceptions:
This argument holds for most cases, but not for all. If it can be shown that that there is not a future of value, say thorough embryonic DNA testing that there are sever issues this argument would allow such abortions. Since the argument hinges on there being a unique human organism and there can be a sound biological argument that one does not exist until after twinning this argument would not omit the morning after pill. Finally this argument would not omit infanticide as commonly practiced today with severely premature and physically challenged children facing lives without value as we outlined in P1.
last caveat - this argument makes no attempt at the next level argument that even if the fetus has a right not to be killed because of it life of future value, that does not necessarily give it the right to the use of the woman's body, that is a different argument that is pointless to have until this one is done. when this one is done - i am happy to do that one.