Henry Oliver has been reading David Edmonds’s new biography of Derek Parfit, and says:
… he had little sense of connections between his past and present self, and little sense of any narrative of his own life. This is consistent with his views on personal identity, that it is something of an illusion …
Parfit probably had aphantasia. But this makes it sound as if he also had SDAM. (The two often, though not invariably, go together.) I have both, yet don’t really grasp Parfit’s theory of personal identity.