This one is quite epistemological…
Or better referred to ass the Ship of Theseus is a thought experiment where Theseus has a literal ship, & this ship has pieces which break. These broken parts are replaced with new, fixed one. So, in the end with all the broken pieces replaced, is it the same ship?
How this relates, us as humans are made up of obviously our physical selves, but our memories. Whether it being in our own head or someone else’s perspective. But what happens when you are left with no memory?