I'm not a person who can scream and shout so this is my only outlet. It's all done very logically. Pretty much all the honest truth-telling there is in the world is done by children.
Personality is born out of pain.
It is the fire shut up in the flint. A multiple personality is in a certain sense normal. A person should not promise to give a child something and then not give it, because in that way the child learns to lie. It simply files things away. It keeps things for you, or hides things from you - and summons them to your recall with a will of its own.