Krakauer's statement that he will not be an impartial biographer tells the reader that he will be injecting his own thoughts and opinions into the story. Even though Krakauer has access to McCandless's journal and all of his belongings, Krakauer must make some assumptions or guesses as to McCandless's state of mind and motivations. Many biographers try to be impartial but it is impossible. The biographers make choices as to what about the person's life they include or leave out in the book. In this way, the biographer is not impartial because there is some element of a person's life missing that could change the way the person is seen. We can expect Krakauer to add his own thoughts and opinions about McCandless's actions. Krakauer also includes information about other hikers that have gone missing in the Alaska wilderness.
The scientists of today are not utilising their knowledge for the good of the society but to enhance power of a country or they are in the rat race to become a Superpower.The blame should come on politicians because they give money to scientists with a tag of what they are supposed to invent.The laboratory finds the chemical.The final invention like an atom bomb ,laser bomb ,robotics to be used for war surprises everyone. The general public never demanded for such things in their life from their politicians but the race to become most powerful country on this planet leads to wars which is not good for mankind.