Betty Edward's book is horrendously misleading to a serious artist. Her book rewards the user with false sense of skill - learn to draw what you see and not what you know. This is easy to do and she has garnered a tremendous support. Any serious artist who is seeking to truly learn how to draw must go through the fundamentals of construction and being able to draw the same thing from a different viewpoint/angle. Try that with Betty's book where one learns how to draw from a reference without understanding the structure. The reader gets to produce nice looking results, but they will miserably fail when asked to draw the same exact subject from a different angle. This indicates lack of fundamental understanding of how to transform 3D objects/scenes into 2D plane. One has to learn how to internalize the object and its structure before putting it down on paper. Betty's book also is riddled with pseudoscience and baseless claims of how the human brain works.