J. K. Rowling has written a new book. Did you notice something in that sentence? Those who know my affection for the Harry Potter series should immediately recognize that my opening sentence ended, not with five exclamation points, but with a period. Sadly, I am not too thrilled about this book. And this is coming from a self-proclaimed ‘Pothead’ (my endearing term for Potter fans). I have always been on the defensive for Rowling, arguing...