Footprints does not purport to be a musical biography, nor does it claim to be a definitive one. Its title seems to refer as much to Shorter's spiritual work as to his musical output. For example, this comes near the end of Mercer's introduction, when she's discussing what makes Wayne exceptional: "It's not just his legacy in music, though he is a living link to the last fifty years of jazz history . . . what makes Wayne truly extraordinary is his ability to find hilarity or profundity in almost every moment, often both at the same time."
There are small errors in the book, for sure, which are likely the work of some overeager proofreader. However the misidentification of a couple folks in photos or one wrong date does not discredit the entire book for me. Clearly Mercer did consult Mr. Fitzgerald's fine chronology and made every effort to get the facts straight.
The more serious charge here is Mercer's dismissal of Shorter's Blue Note period. Yes, those records have great stature today, but Mercer wrote the book to reflect Shorter's experience; his artistic development and creative process. She actually took the time to get to know him, so that she could write from his perspective. "Blue Note was like going to the bank for us," Wayne said. Though this is hard for fans to believe, Shorter didn't care about his Blue Note records half as much as his work with Miles Davis, and Mercer explains that quite clearly. And then she gets into the working method of the Miles Quintet in some depth, especially the musical interplay in the group. For me, her quick summary of the Blue Note period and focus on the dynamics of the Miles Quintet is a sign of just how well she got to know Wayne. His tenure in Miles's group had far more impact on the rest of his life and career than the Blue Note recordings did, because, as Shorter said of Van Gelder's studio: "There was nothing developmental as a band. A recording was just one movie, and then the next was another movie, in a kind of dream away from Miles." Mercer's reasoning on this matter is quite clear in the book.
Surely there will be many more books written about Wayne's music. I can't wait to read them. He's worthy of them. (Though even if another biographer does also have Wayne's cooperation, as Mercer did, he'll be hard-pressed to pry any more musical discussion from Wayne. As we've seen in interview after interview, he just doesn't like to discuss it.)
As Mr. Fitzgerald pointed out she's done an astute job with Shorter's personality, and has written a book that future studies can build from with confidence. From the L.A. Times review of the book, which is on the money: "More academic overviews of Shorter's career will be written, but it's impossible to imagine a book that would give any better understanding of this enigmatic man." Like this reviewer, I just accept Mercer's book for what it is, rather than focusing on what it isn't.