A documentary is a film that explores real people and situations through factual information and actual images to bring viewers into new worlds and experiences. While documentaries strive to present facts, it is how the filmmaker weaves those facts into a compelling narrative that defines the genre. Documentaries can preserve history, persuade audiences, analyze topics, express ideas, discuss issues, and explore unfamiliar subjects through various modes like expository, observational, interactive, essayistic, and experimental styles. When watching a documentary, it is important to remember that every element was intentionally included by the filmmaker to focus on realism and that the relationships between filmmaker, subject, and the presentation of realism are key considerations.