What IS an organ?
How many organs are there?
Why am I a body or why do I have a body?
What will it mean to imagine another organ?
These are all questions with interesting philosophical & practical implications.
When we didn't know about cells or heartbeats or DNA or RNA, it didn't mean they weren't there. But naming them allowed us to imagine them, study them, learn from them, live differently.
We can imagine someone inhabiting a body, citizenship, personhood, or a combination therein...these are all related but different ideas.
"Is a fetus a body part of a parent, or a sovereign citizen?"
"Is a Black person 3/5 of a human, or a body that can be bought or sold?"
Big questions!