So my father, operating without major chunks of his digestive and excretory systems, isn't alive?
I get the idea. The blind and deaf are less than human.
Please stop burning strawmen. You are completely misconstruing my point, and it's simply poor argumentation. I never said that I promoted finding a set point so we can say that some part of abortion isn't murder. I was simply providing examples as to why such is difficult.
I'm sure you also realize that developmental biology is not an absolute. Every individual develops at their own pace. And the time progression is not a definite "mileston A happens at time B" situation.
And of course, silly as it sounds, doctors make mistakes when calculating gestational age.
I'm glad you mention this, actually. My bad for forgetting- I really should have. For the record: all that FYI regarding developmental milestones are approximates, and subject to alot of individual variation. Also, I seem to have forgotten to mention that gestational age is a tricky thing to calculate as it's based on recall of menstrual periods, and of course, doctors (being people) do make (a lot of) mistakes (thank you for the sarcasm).
I don't see why it is important to ride the line as closely as possible when setting the cutoff for when an abortion is not horrific. The only reason I can see is a coordinated effort to get people to accept more and more. "If we can get them to accept aborting a blastula, a baby that can't survive outside the mother isn't so bad. Once we get that, partial birth isn't so bad. Once we get that..."
I was under the impression that I agreed with you but I could have forgotten to explicity state this...here: "Any arbitrary set point is going to be just that- arbitrary, which is a pain in terms of jurisprudence." Oh, and my first sentence: "The difficulty here (I dunno if I posted this already) is that life and development of such exists almost purely on a spectrum, or variety thereof."
Now it's all well and good to criticise the current direction of the debate, but do the implications you draw make you believe that abortion should be made illegal, period, under the premise that it is tantamount to murder? Or are you simply stating that it is non-sensical to be debating about when "life" can be defined as such, and is in fact not particularly constructive to the debate regarding abortion?
The only absolute, the only sure thing that we can say "it is before, it isn't after" in all cases is conception. Why are people terrified of this?
Perhaps because it's next to impossible to tell when the moment of conception occurs, and therefore the applicability of the concept is next to zero...for a start (if you haven't considered other social factors and the circumstances surrounding why one might wish for an abortion). Pregancies are typically detected around the 5-7 week mark (clinical presentation due to physiological signs such as morning sickness) and the best pregnancy test we have is for a hormone (hCG) that doesn't express itself until a while after conception and implantation.
Fun (unrelated) fact: about 3/4 of pregnancies abort spontaeneously anywhere along the path to birth.
Other notes: Perhaps you mean symbyosis. On this point, I think you are perfectly right, this is a far more accurate term than parasitism. Editorial: I bet Martyr was just throwing a jibe.