Well from what I've seen in my googling, it seems to be a concept relating to the Unwritten Doctrine of Plato. He had esoteric teachings reserved for his close

Well from what I've seen in my googling, it seems to be a concept relating to the Unwritten Doctrine of Plato. He had esoteric teachings reserved for his close following vs his exoteric writings for the public. Esoteric came to mean shadowy/hidden, but it's really just how you say/think/act differently with an insider group then an outsider group. https://en.wikipedia.org/wiki/Plato%27s_unwritten_doctrines https://en.wikipedia.org/wiki/Plato%27s_unwritten_doctrines