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.

Jul 24, 10:52am: Note: first means "able to do autofellatio". A thing that does not exist in the general consensus, like the bicameral mind and chin sleeping.