So, I have a Land Rover. I replace the brake drums because they are worn. Is it still the same Land Rover?
Now and then other parts need to be replaced, so I replace them. At what stage does the Landy cease to be the same Landy? Does it ever cease to be the same one?
I replace the chassis, the bulk head, the body panels... in fact, over the course of a couple of decades, I replace every part of the Land Rover. Is it still the same Landy?
If it is, then what if I've kept all the parts from the original and put them all back together (because they were worn and tired but not completely unserviceable). Then I have two Land Rovers. Which one is the original? or are they the same Land Rover?