In this book, Robin Laws purports to explicate a model of the emotional rhythms of a story, primarily through looking at two elements: beats and transitions. On the face of it, that sounds...good? Reasonable? But I experienced this book as a bewildering forest of classifications and disparate techniques with no felt center.
Regarding beats, the advice on offer can be entirely, and accurately, summarized as "varying the emotional beats of your story is good, and over the course of the story the emotional beats should probably trend downward." That's about all he tells us with regard to how his model of fiction is of use to the working writer.
It's about the same with transitions: there's a flurry of type-categorization, but he fails to convince me of the use of all this taxonomy other than, again, saying that variety is good, so knowing the types helps you know when variety is present or absent.
I'm not saying the book is garbage; I can certainly see myself using beat mapping for a scene that isn't working but otherwise should be in terms of character, stakes, motivation, etc--it might show me something I'm missing. But this book could have been an article; most of it is not useful for help in understanding fiction.
7C