Different Sort of Personal Identity:\Ethical\ Identity . Personal Identity: \Ethical\v. \Metaphysical\questions The previous lectures and readings on personal identity were primarily concerned with the metaphysics of personal identity. Question of diachronic identity/unity: Confronted with an individual X at one time and Y at another, what would make it the case that X and Y are (or are parts of) the same person? We've seen that the answer to this question may well depend on what sort of thing you think persons are: are persons bodies? Streams of consciousness?