Great discussion and I love this question. I'm personally not a fan of the Triune brain and stopped using it in my trainings over a decade ago. However, as a trauma trainer, I am forced to use models to simplify VERY complex neuroscience. Models allow us to present this complexity in practical ways. I would argue anyone trying to explain the relationship between trauma and the brain/nervous system in less than a semester-long course must simplify complexity and in doing so sacrifices accuracy. I think as long as we acknowledge this challenge, models help us teach the biological injuries left by ACEs.