It seems the Wall Street Journal stirred up a bit of controversy today in publishing an op-ed by Joseph Epstein, calling on Dr. Jill Biden to stop using the title "Dr." in her name. Mr. Epstein, who taught at Northwestern for 40 years, offers arguments I summarize thus: (1) only medical doctors, or perhaps also scientists, should use the term. (2) Standards for the PhD aren't what they used to be, so it's really not a significant distinction. (3) Biden's PhD in particular sho