Is there a good argument against the belief that personhood is determined by self-awareness? For instance a fetus is not self-aware, therefore it is not a person and has no right to life.
I would challenge the premise itself. Is there any scientific evidence that a fetus is not self-aware? If it responds to external stimuli, is it not self aware? Is there even a scientific
definition of the concept of “self aware?”
Is a cat self-aware? Does a cat know when it is hungry or thirsty, or content or in pain? Doesn’t this represent some level of self-awareness?
Self awareness is not the same as intelligence (which is what I think some people are trying to equate). Self awareness simply means that we are aware of our own needs and respond to both favorable and unfavorable external stimuli.
Is a single-celled bacteria self-aware? If (for example) a water-borne bacteria is well adapted to water at in certain temperature range, and the water becomes too warm or cool, does the bacteria not attempt to move to a more desirable environment? Isn’t this a form of “self-awareness?”
There is a pro-life bumper sticker that reads, “Abortion stops a beating heart.” This is a scientific fact. The heart of a fetus begins beating 18 days after conception, and by 21 days it is pumping its own blood type (which may differ from the mother or father) through a closed circularity system. This would be before a woman had missed her first period, and before most pregnancy tests (especially the drug-store variety) could even determine she was pregnant.
If a fetus is attacked by an abortionist, and makes an effort to evade the attack (as its arms and legs are sliced off), and exhibits a reaction that can reasonably compared to a scream, does this not demonstrate some level of self-awareness?
If I chop the arms and legs off of a teddy bear, it does not react. A teddy bear is not self-aware. If an organism reacts, it has some level of self-awareness.
You can actually watch a video of a fetus being attacked by an abortionist, and trying to evade while screaming. Many abortions are guided by ultrasound, and one such recording can be seen
here. WARNING: you probably don’t want to watch this murder. It is quite disturbing.