It’s not pleasant when a man’s good fortune comes at the hands of another man’s loss. What would you call it when you’re the author of a new book about a Motown act, Diana Ross and The Supremes, that fizzled out more than 35 years ago—but another Motown star of that era, Michael Jackson,  dies the week before your years of research are published, making your book front and center? MARK RIBOWSKY podcast excerpt: "Very loathsome—that's the thing everybody talks about—even before The Supremes were popular. Even back then, (Diana Ross) was getting on people's nerves left and right, saying what she was going to be. This was an obsessed woman, even when they were nobodies. Everybody laughed at her—but who had the last laugh, right? There would never have been a Supremes without her as the lead singer."   Mark Ribowsky didn’t know Jackson was going to die, of course, and he certainly didn’t know Jackson’s will would name Diana Ross the likely guardian of his three children. The Supremes: A Saga of Motown Dreams, Success, and Betrayal is not the first biography of the ultimate girl group, but it probably won’t be hurt by it’s timing. Mark Ribowsky • • •