Here’s the unvarnished truth: Corporate executives, politicians and, indeed, almost every group of people with power and authority have become addicted to spin. Instead of communicating clearly, their official words descend into tortured jargon designed not to reveal, but to conceal, and to make the unpleasant (for example, “mass firings”) sound a bit more appealing (“rightsizing”).  The more syllables and 50-cent words they can throw at a simple concept, the more likely they are to get away with it. But Henry Beard and Christopher Cerf don’t want those powerful obfuscators to have it so easy.  The former  National Lampoon  staffers have put together a book delving into this sneaky lingo: Spinglish: The Definitive Dictionary of Deliberately Deceptive Language.…