Methods of presentation. Although expository prose if the main vehicle for giving information in historical writing, additional tools are often important, to explain facts, make linkages clear, or handle mountains of data. Recently the development of computers has opened up new horizons in the management of information and made possible new kinds of historical study. Through the commentary, the reviewer provides a judgment on how well the book accomplishes its purpose. The author's ability to manage the subject.
Authors vary widely in background, preparation, and ability.
Amateurs may do excellent work, but they must be viewed with suspicion until they prove their command of the subject. Point of view. An author's cultural, philosophical, and professional background affects the approach to and vision of a problem. The reviewer should suggest the impact of this background on the author's ability to provide an evenhanded analysis. The quality of writing can make a dull topic come alive or destroy the most exciting subject.