"What's all the fuss with myelin?"
I just don't get why the author wasted a sizeable chunk of his book on the topic myelin. "We are myelin beings," he said. To which I would say, "What??!!" It's like saying "We are water beings." We're made up of 75% water, right? I really find it inane.
However, I appreciate the research that he did. Old stuff, really. I also appreciate the three components of talent he mentioned: deep practice, ignition, master coaching. However, I find deep practice (which is actually based on Anders Eriksson's "deliberate and effortful" practice) and master coaching more useful than ignition and all that stuff about myelin.
The book is not supposed to be a scientific treatise on myelin. Just mentioning the importance of myelin is enough.
The real gems of this book are those parts where he describes his visits to the talent hotbeds. The information he presented is practical and solid examples are indeed more useful. Readers can glean their own insights from them.
I would still recommend buying this book because of the information and the anecdotes from the talent hotbeds. This book, however, could have been written better.