The authour discusses the various courses of treatment available at the time and the kind of treatment that Nash had. At several points, Nasar examines Nash's performance and discusses whether or nor Nash was correctly diagnosed. The use of the third person approach allows the author to explore all of the areas. The result is a book that contains a wealth of information from different disciplines which adds to the thoroughness and completeness of the book. Since the author is writing about the life of John Forbes Nash Jr., this is the only approach that she could take.