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.
You are correct, the person was on life support. But they grew and went through puberty like any other normal functioning human. (I believe the person was born brain dead, and the wealthy parents couldn’t let go so they kept the person on life support at home).
Cells are living things by definition. So it is alive, though the body functions more like a tree than a mammal at that point. But a decentralized nervous system grew around the different vital organs.