This is one of those books that, I suspect, the rating says more about the reader than the book: in part, because this book isn’t what it seems (or, at least, that’s not its full story).

I would not use this as a reference work, but it was a thoroughly enjoyable read, most of the time. (My small reservation being that sometimes the author’s sense of humor shows itself (I hope in ways that aren’t always unambiguous).