Some librarians and educators consider the non-fiction booktalk to be the best way to win over a young adult audience. Non-fiction booktalks allow the presenter to tell astonishing yet true stories that can garner an emotional response. Non-fiction booktalks include a wide range of topics such as poetry, history, music, entertainment, crafts, folklore, crime, psychology, UFOs, etc. They lend themselves to audience participation, since the presenter can ask questions throughout the booktalk, such as, "Who has heard of a ___?" "Have you ever seen a ____?" or "Who knows what a ____ is?" Common approaches to nonfiction booktalks include using visual or mental imagery, vignettes, notable facts and astonishing statistics, booktalking in the first-person point of view, or initially presenting a nonfiction book as though it were fiction and surprising the audience by revealing that it is nonfiction. Indexes and appendixes should be mentioned if they are included in the book.