God doesn't think he's a doctor. Surely you know that ancient wheeze. It comes to mind because the Associated Press Stylebook editors at the American Copy Editors Society's national conference in New Orleans last week restated their preference to restrict the use of the term Dr. to M.D.s and osteopaths. And, I think, dentists. Oh, and veterinarians. (Chiropractors can go roll a hoop.) Why people who spend the workday probing into other people's orifices are more worthy of dignity and respect than someone who has mastered quantum mechanics or Babylonian cuneiform continues to baffle me.