Would seem to imply memories don't make up who you are - I mean, what I'm inclined to read into it is "there are souls and they got moved around", but it could be anything - in which case, if there's a way to cause myself amnesia (and with this level tech why wouldn't there be?) I should just wipe out my memories and find out who I am. Ideally it'll also be possible to save the memories in backups somehow, or I'll have "external memory" like diaries and such, in case I start regretting the decision.