premise: The Brat Pack appeared in films in the 20th century.
hypothesis: The Brat Pack is a nickname given to a group of young actors who frequently appeared together in teen-oriented coming-of-age films in the 1980s . First mentioned in a 1985 New York magazine article , it is now usually defined as the cast members of two specific films released in 1985 -- The Breakfast Club and St. Elmo 's Fire -- although other actors are sometimes included .