I just want to point out that trusting in someone's competency and leaving certain work for them as you think they are better suited for the work... that is just no Hierarchy.
Let's say, we have a man and a woman. They have babies and the babies seem to be able to fall asleep better to the song of the man's deeper voice. The woman decides that she will let her husband put the children to sleep if possible. Did the woman submit to the hierarchy and her husband, or is she just efficient?