Does replacing one piece of the boat make it not my boat?
It's the same as trying to define when a pile is no longer a pile.
I have a pile of rice, if I take one piece of rice it is still a pile. If we astablish that taking one away does not make it any less of (my boat, or a pile) then at what point does it stop being the old?
Lord Wilmore is right onto things. Just because I say the single grain of rice is still a pile doesn't mean that it is too you. Or that my boat is no longer my boat. If my boat where to have some historical significance it would only come down to the significance behind the story, not the object itself.
I almost wish you hadn't posted willmore I wanted to see what kinds of deranged arguments I could get from this.