Resolves to %. These categories are much simpler than the usual ones. Lie on your stomach on the floor or connect a stick to your groin and nose. If the shoulders do not connect, you have backward shoulder posture. If the groin does not connect, you have backward groin posture. Answer below.

I suspect the end of stomach sleeping on hard surfaces resulted directly in the end of the bicameral mind. Jaynes's book is actually vastly better researched than most academia.