Apparently Charles Murray (or more likely, the American Enterprise Institute) has a website offering the following quiz, How Thick is Your Bubble? You answer questions and find out how completely isolated you are in the Belmont or Fishtown bubble. A more detailed quiz is in his book, Coming Apart: The State of White American, 1960-2010. My score–13 out of 20. Since we’ll be doing a review online shortly of the book, you can take the quiz and then read the review.