Why isn't there a special name for the tops of your feet?
How many legs does a dog have if you call the tail a leg? Four. Calling a tail a leg doesn't make it a leg.
Nearly one-half of all Americans are torsos.
My fundamental premise about the brain is that its workings—what we sometimes call "mind"—are a consequence of its anatomy and physiology, and nothing more.
—Carl Sagan in The Dragons of Eden