What is wrong with reviewing all of the projects in a multi-project portfolio? W

What is wrong with reviewing all of the projects in a multi-project portfolio? Why do the authors insist on reviewing only exceptions?The chapter cites a study highlighting a high failure rate of projects to achieve their goals. What actions do the authors suggest an organization take to overcome this situation?If an organization already has achieved an excellent success rate with projects and is at or near the top of its industry should it forgo the review process covered in this chapter?Describe the five minimal components of a project portfolio review process.