In his defense of the bundle theory, Parfit claims that the continued existence of a unitary personal identity does not matter because there exist options that are good enough. What are these options, and what is the thought experiment that he uses to make his case

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

answereruption of molten material; magnetic stripes in the rock of the ocean floor; the age of the rocks themselves;