Philosophy of Identity.

"How many things can you change before we are no longer us?" "How many can we replaced?" We can use the Ship of Theseus example - "How many peace of the Ship of Theseus we can change before it’s become a different ship? " All wood was replaced – so, is it still on this point completely new ship? Is it still his ship? Is this still the same ship? and Abraham Lincoln Hammer's example.