Politicians are regularly excoriated for changing their platforms with the slightest breeze of public opinion, but they do it nonetheless. Celebrities suffer less judgment but are watched with no less fascination when they undertake makeovers to prolong their careers. Given this, it's only natural that name-brand journalists, who fall somewhere between the two, are just as subject to overhauling that brand when the winds of political, economic, or cultural thought have changed. If there's any doubt about this, just look ...