I am a murderer and shoot you in the heart: I escape on a motorbike and fall: my head is crushed and they now transplant your head onto my body: who am I?
I am a woman and have the head of a man fitted! I wake up to find I don’t have a penis: who do I sue?
He’s not. He has a hypothesis that is being bashed all over by other experts in that field. Half of the criteria he needs to meet to even be able to attempt this have not been met by modern medical science. Like, say, re-attaching a severed spinal chord, let alone attaching someone else’s spinal chord.
who am I?
You are dead. I would claim the “head” determines the identity of the person. Thinking otherwise, I think, betrays magical thinking.
I am a woman and have the head of a man fitted! I wake up to find I don't have a penis
Once again, you are dead, the man wakes up and finds he doesn’t have a penis. He should feel lucky he woke up at all. Besides, haven’t we all wished we could experience this anyway?
There was a movie where I think they transplanted a face.
And the person had the identity crisis of having to deal with having another face look back at him in the mirror.
I suspect you would have the same identity issues with another body.