There is a difference between a hierarchy of control, and a hierarchy of capabilities. Think of a student driver and instructor scenario. The student driver is in direct control of the car, while the instructor has more experience and is a better driver than the student. The instructor can mentor the student and provide safeguards so that the student does not kill themselves while obtaining knowledge. It's accepting these sorts of hierarchies in humanity that allow us to make better decisions, and listen to experts, while not giving up control over our own actions.