Jonathan Chait burned up the Internet this week with his critique of so-called political correctness. Among many responses, Amanda Taub‘s stands out for its denial of Chait’s basic premise. According to Taub: …there’s no such thing as “political correctness.” The term’s in wide use, certainly, but has no actual fixed or specific meaning. What defines it is not what it describes but how it’s used: as a way to dismiss a concern or demand as a frivolous grievance rather than a real issue. This is a curious response. Sure, people use the term in different ways. But Chait provides a...