By Keith Fitz-Gerald Investment Director Money Morning/The Money Map Report Every market cycle has its genius. Even a market cycle as wild and volatile as this one has been. And the latest genius might be just what the U.S. Federal Reserve needs to restore order around here: She might even be able to bring credibility back to the global financial markets. Elizabeth Duke goes by "Patsy." And while the nickname may be soft, the person behind the moniker isn’t soft. In fact, we believe that Patsy Duke - a career commercial banker - is the only Federal Reserve insider that understands how the global money markets actually work. As such, she might just be the next central bank chairman. We say that because, unlike current Fed Chairman Ben S. Bernanke and the rest of the Beltway Boys - all of them academic theoreticians, data experts, or ...