@FreyaManibrandr @autistikai Or Rational Brain thinking being done by the Irrational brain and the other way around.
Oh, and there's Cerebellum Alters. They're kinda Special, and have their own rules and creation mechanisms.
Most folks I know who are Plural are Trans/nb, have traumatic backstories, and are Otherkin. Especially Cerebellum Alters, they tend to be who we left behind while in the process of "Growing Up".
Nine times out of Ten, their Game-save can be used for a Savegame+.