Journals, photographs , textbooks , travel books , blueprints , and diagrams are also often considered non-fictional. [ citation needed ] Including information that the author knows to be untrue within any of these works is usually regarded as dishonest. Other works can legitimately be either fiction or nonfiction, such as journals of self-expression, letters , magazine articles, and other expressions of imagination. Though they are mostly either one or the other, it is possible for there to be a blend of both. Some fiction may include nonfictional elements. Some nonfiction may include elements of unverified supposition , deduction , or imagination for the purpose of smoothing out a narrative , but the inclusion of open falsehoods would discredit it as a work of nonfiction. The publishing and bookselling business sometimes uses the phrase "literary nonfiction" to distinguish works with a more literary or intellectual bent, as opposed to the greater collection of nonfiction subjects.