I think your new profile picture is super cool!
This is such a thought provoking post. I wish I had a better answer, but just the thought this post inspired was worth it even if I don't get to read much from it.
I think of my husband. How much brain damage would he have to get before he was no longer the same person? Obviously I'd take care of him even if he was brain dead, its just that I'd be taking care of a different person potentially. I feel like this is a question you would have to be a brain scientist to answer. Just because I poke around in there with my tools and saws doesnt make me a scientist.
How much volume of brain are we talking about here? 1 cubic inch? 8 cubic inches? Is it one very specific part of the brain? How much brain needs to be cut out and preserved in a jar before that bit of brain is more valuable than the body it came from (assuming both are kept alive.)
I asked my husband (who is more knowledgable than me about brain stuff because he researches JFK a lot) and he said that reducing it all down to inches of brain mass is a reductionist view so now I'm more confused.
Who am I? What is me? Well I feel emotions and I have the ability to recognize those emotions as things I experience. I also have the ability to make plans and I have a sense of aesthetics. I also have a set of other senses major and minor that make up this Irken Gvimader.
I feel like this means that I am not a thing but rather a collection of things. If you smash a bee in a swarm then it is still a swarm of bees. Similarly if you remove my capacity for emotions then I can still plan and probably even maintian a conversation. In my opinion I'd still be me. If you added another ability to me, such as a superpower, then I would also still be me.
So another awesome consequence of this thought experiment u encouraged is that I now realize that my personal sense of self has a lot more in common with a swarm of bees than I realized.