Earlier quoted context omitted.
My point is that the reason we consider the entire body to be a “swappable part” is because we have constructed a metaphysics in which it is. That doesn’t make it actually the case, and furthermore, doing so has a lot of negative consequences for our actual embodied selves.
Metaphysics? What if I put you in a coma and wake you up a few days later and tell you a team of surgeons had replaced one of your internal organs with a lab-grown genetically equivalent version. Or maybe they just cut you open and closed you up again. Sure, there's a small scar left as evidence and some residual pain. But how would you be able to tell the difference? How does it connect to your perceptible self?
- Why is our perceptible self the only thing that should determine our sense of identity? Aren’t there many aspects of our body and mind that aren’t we aren’t aware of on a conscious level?
- Is there a point at which replacing your organs replaces You? This is called the Ship of Theseus and is a pretty deep problem.
- Is the ability to be conscious or communicate via language the sole determiner of a thing’s existence? If I put my head on your body, what is this new thing? Just me? My head on your body? Even if your cells and body continue to exist, with anything like tattoos or personal elements. Etc.
In any case, I’m talking mostly about the metaphysical model of treating the mind (ergo the brain) as the real Self and the societal consequences that leads to.