Principles of 2D Design

I thought the Gestalt princples of design were the most interesting aspects of the chapter. I remember reading about them in AP Psychology in high school. One thing that bothered me, though... I'm not sure this book has the best examples. When it was discussing the proximity principle, the example used was the Creation of Adam, and the connection between God's finger and Adam's finger. I guess it works well enough, but from what I remember from high school, it seems like a better example could've been used for that principle. Besides that it was an informative chapter. I feel like I learned a lot about the deliberate organization of elements in a piece of artwork.