This portion of the book is designed to present information from a more question and answer perspective, rather than a presentation perspective. Often, presenting the same or similar information from a different perspective can allow the practitioner to catch or understand details that may have been overlooked or missed when presented differently.
Next, this change in presentation allows for combining, detailing, and/or condensing information that may have been spread throughout the book. Again, this allows for seemingly disparate information to be related, perceived, and understood from a different light.
Also, this section allows for a more personable presentation of the information. Where other sections may be more clinical in nature, this section's design is to be slightly more subjective and slightly less objective in some respects. In other words, this section is not just primarily limited to "just the facts". It also includes more nuanced elements that may not be present in many of the other sections of the book.
Finally, this type of presentation makes for an easier read; although this is not always true. Where other sections may be thick and require a higher degree of mental attention, each FAQ tends to be better suited to a quick and pointed overview on a specific topic or area of interest. Each FAQ is specifically kept relatively short and directed in both its scope and context. Although this does not always allow for a comprehensive answer, it does allow for a more direct, and often times, well targeted answer on a single subject.