Normal is someone you do not know well enough yet. It is a fictitious misconception. If you think about the concept objectively, you likely will not be able to name anyone you know really well that fits into the ideal group you have mentally abstracted as normal. The construct is part of tribalism and our human complex social hierarchy on a subconscious level; we are deciding who is and is not part of our personal tribe and their ranking within that hierarchy relative to our own. Everyone is abstracting on this level, but few are self aware in this space.