12-24-2020, 03:06 PM
Secondary personalities are, according to theory, created when the primary personality experiences something it can't cope with, usually some form of childhood abuse, but there have been cases where adult experiences like war or some other catastrophe were thought to have done it. In Juliette's case it would probably be the guilt of having helped facilitate Kelly's death combined with some sort of unspecified drug and psychological conditioning by HW. I don'r think there are any cases on record of a "split personality" being created through deliberate effort, so we would be talking science fiction here.