In many ways. . .the completeness of biography, the achievement of its professionalization, is an ironic fiction, since no life can ever be known completely, nor would we want to know every fact about an individual. Similarly, no life is ever lived according to aesthetic proportions. The "plot" of a biography is superficially based on the birth, life and death of the subject; "character," in the vision of the author. Both are as much creations of the biographer, as they are of a novelist. We content ourselves with "authorized fictions.
Ira Bruce Nadel, Biography: Fiction, Fact & Form
accuracy, biography