In journalism just one fact that is false prejudices the entire work. In contrast, in fiction one single fact that is true gives legitimacy to the entire work. That’s the only difference, and it lies in the commitment of the writer. A novelist can do anything he wants so long as he makes people believe in it. - Gabriel García Márquez for the Paris Review
That's fortuitous. Though I can't quite agree with him on the function of a tape recorder (which I find is better for accuracy and long conversations), but to each their own. Now the next question is, what function does truth have in creative nonfiction?