You don't go to the movies to do historical research, unless it's historical research about the movies.

Summary

This quote suggests that the primary purpose of going to the movies is not to gather accurate historical information. Rather, it implies that movies are meant to entertain and engage audiences, and historical accuracy may be a secondary concern. The quote emphasizes that movies can serve as a source of information about the history of cinema itself, rather than providing in-depth insights into other historical events or subjects. It highlights the distinction between movies as a form of entertainment and the separate discipline of historical research.