It is useful in repeating the important material in alternate ways to insure that the reader can absorb the material and new concepts. Also, it may not be necessary to read and study all the chapters, but the reader can focus on the chapters of particular concern before perhaps studying all the material, for example: Learn about twelve misunderstandings and mysteries in the standard model of the universe, and their solutions,
Discover the truth about Dark Matter, Dark Energy, the Hubble red shift, tired light, and the effect of gravity,
Learn why gravity is stronger than electrical and nuclear forces,
Find a simple explanation for the Pioneer anomaly for NASA space probes,
Understand black holes and the cosmic microwave background (CMB).