From The Introduction:
We work daily to improve our technique, in order to be free of it. In the long run, we really aren’t after speed, we are after control. Speed is a by-product of control. The ultimate use of having complete control is to be able to play any musical idea one reads, hears, or imagines.
In my experience as a musician and an instructor, speed/control is achieved by first going the other way. Playing a piece of music at a slower tempo allows you to process your understanding of the music in a relaxed frame of mind, and to incorporate the necessary coordination motions in a fluid manner. Following that, the next step is to play the music in incremental steps, a little faster each time. Patience and persistence are key in realizing your goals. That is the essence of this book.