  Both the Kantian and communitarian objections target the   disunifying implications of a metaphysical approach like  reductionism, insisting instead that we are indeed unified as either  practical agents or selves in moral space for purely normative  reasons. Any theory of identity we construct, then, must be  constrained by these normative considerations, which are thus  obviously prior. Nevertheless, we may have some reason to doubt these claims. Consider first narrative unity. For one thing, it is not  clear that intelligible actions are those for which the agent is  accountable. Actions of children and the insane can be perfectly  intelligible – even intelligible within some kind of narrative  structure – without being those for which the agents are  accountable.