At first, I thought Ahab's Leg Dilemma might ask something like if a person replaces parts of their body with whalebone, at what point, if any, does that person stop being the original person?
>A typical formulation involves a heap of sand, from which grains are removed individually. With the assumption that removing a single grain does not cause a heap to become a non-heap, the paradox is to consider what happens when the process is repeated enough times that only one grain remains: is it still a heap? If not, when did it change from a heap to a non-heap?