by exploited » Tue Feb 03, 2015 11:07 am
You've hit the hard limit of your argument: you can't provide a suitable definition of personhood, and so requiring we use a definition of personhood to determine the morality of an action is absurd. Basically what you're doing is the equivalent of saying "We need to figure out how to light the hallway, and so let us design a fusion reactor to power a mini-sun." The solution, in other words, is a hopelessly complex labyrinth with no chance of being traversed.
What is really interesting is that your argument relies upon the creation aspect just as much as mine. And that seems to be the most basic and fundamental truth: if you create human life, regardless of how or why, it is a moral wrong to extinguish it. Whether it is the same as you or different is irrelevant.