IN JULY 2011 a muck-raking journalist at the Guardian newspaper revealed that employees of the much bigger News of the World had illegally accessed the mobile-phone messages of a girl who turned out to have been murdered. Other grim revelations followed. For a few mad days it seemed as though every paranoid theory about illegality and cover-up in Fleet Street was proved correct. David Cameron, the prime minister, demanded a judge-led inquiry. Lord Justice Leveson, an appeal-court judge, was chosen to conduct a full review of the press and recommend ways of taming its worst abuses. But the problem with asking a judge to investigate something is that he will eventually produce a report.