I've adopted a version of the RSVP cycles for use as a teaching tool for some of my classes. This is a useful text with a variety of illustrations. However, I don't like the layout / design of the book. The alternating text sizes, fonts and page layouts are tiresome. Not much cohesion in the overall look of the book other than being totally esoteric which influenced me to jump around from one section to another -- skipping segments of text outright.