A significant portion of historical writing ranks as literature, particularly the genre known as creative nonfiction, as can a great deal of journalism, such as literary journalism. However, these areas have become extremely large, and often have a primarily utilitarian purpose: to record data or convey immediate information. As a result, the writing in these fields often lacks a literary quality, although it often(and in its better moments)has that quality. Major "literary" historians include Herodotus, Thucydides and Procopius, all of whom count as canonical literary figures.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): What is the main function of journalism or historical documentation?
to record data or convey immediate information