I found this observation particularly apt:
This book is definitely not for the copy and paste coder, nor the developer who just wants ready made solutions they can quickly hack into an existing project. Some may disagree, but I think this is a real positive of this book. Matt uses the examples to illustrate certain concepts or features which he wants the reader to understand. I found the examples got me thinking about what I wanted to use JS and jQuery for in my Drupal sites.
This is what I want to accomplish in the book. My goal is to get coders thinking about what they can do (and how they can do it) rather than simply re-using code. I'm so glad that Dave noticed this and brought it into focus. If you are interested in taking a peek at the book, you can download one of the chapters.