There is an old thinking experiment called the Ship of Theseus, in which over a long period of time old parts on a sailing ship are replaced until every old piece is replaced with a new piece and then all the old pieces are refurbished and are made into a new sailing ship.
The Philosophy of Identity
There is an old thinking experiment called the Ship of Theseus, in which over a long period of time old parts on a sailing ship are replaced until every old piece is replaced with a new piece and then all the old pieces are refurbished and are made into a new sailing ship.