“Many style manuals treat traditional rules of usage the way fundamentalists treat the Ten Commandments: as unerring laws chiseled in sapphire for mortals to obey or risk eternal damnation. But skeptics and freethinkers who probe the history of these rules have found that they belong to an oral tradition of folklore and myth. For many reasons, manuals that are credulous about the inerrancy of the traditional rules don’t serve writers well. Although some of the rules can make prose better, many of them make it worse, and writers are better off flouting them. The rules often mash together issues of grammatical correctness, logical coherence, formal style, and standard dialect, but a skilled writer needs to keep them straight.”