Quote:
Originally Posted by Lestat
It's a very tricky subject deciding exactly when an embryo turns into what should be considered a person.
Religious prejudices aside, certainly a blastocyst (containing less cells than the brain of a fly) is not yet human. And just as certainly, there is a stage of embryonic development that should be considered human (my own uneducated opinion is that this occurs when a fetus can survive outside of the womb, as in the case of premature births, etc.).
It's worth noting that some philosophers (such as Peter Singer?) argue that after birth killings can be justified.
For me, it would be at the point where self consciousness occurs. And yes, I realize this might be siding with Singer if it's post natal. Personally, I'm willing to leave it up to science (which I don't think has the answers yet). But I have little doubt that a day old fetus is not human. How many days old? I don't know.
I also think it's worth noting that nobody, or almost no one, favors abortion. I don't and think it should be avoided at all cost. But I do feel there are situations when it is has more upside than birth.
So to answer your question: Yes. Once they are human they should have the same rights. The question is, when are they human? I think that answer can and should only come from science.
Given that science and technology advance then even given the bolded above the scale is still a sliding one on a, say, decade-to-decade timeframe. Unless you fix a firm line at surviving outside the womb without any aid from advanced medical techniques, lets say pre-1900.
Being human, thus gaining personhood, can be based on fully developed brainwave activity and nominal, normal fetal development. I think this occurs in the third trimester but did not look it up. This of course has it own adherents and detractors.
It is interesting, at least from a historical and legal perspective, to check out the entries for abortion and infanticide (after birth exposure) in the Oxford Classical Dictionary.
And the legal definition of 'personhood' or gaining certain legal rights based on age and other factors has varied and evolved in time and place. A point Mason has made.
The last portion bolded is something that is very contentious. This means that science makes the ethical and moral decisions. Something not within the strict preview of science IMO (What does Dennett say on this?). Science does have legitimate facts for input and contribution into the debate/decisions but no more than that. Philosophy, that adjunct to science, and legalist wrangling by ethicists and judges seem the proper social institutions for arbitration. In other words the courts of law, with input from experts. It is interesting, and I would lay odds on this, that some form of religious expert would have an opportunity for input in a court of law on these types of cases. I do not think that is a bad approach.
Last edited by Zeno; 05-10-2015 at 01:41 PM.