like the brain is literally encased in the body so how can it be separate? like if you go around licking lamp posts you’re going to pick up some germ that’s gonna make you feel like crap and you get insomnia or fever and your brain will definitely be impacted. and so you’ll have short temper and that’ll get you into trouble.
I put it like this: if you replaced any other part, or even all your other parts with machines, you’d still be (what you think of as) you… because your brain would still be in there.
There is, however, no replacing the brain. If your brain goes, you go with it. You are your brain.