Documentaries rely heavily on traditional narrative conventions including structure, with a clear beginning, middle, and end. The beginning needs to capture attention by posing a central question intriguingly. The middle examines the issue through human terms like opinions and conflict. The end clearly resolves the argument. Conflict between people or goals develops through stages and allows narrative techniques. A sense of movement through time, space, or psychology also strengthens the narrative. Effective sound and lighting can elicit emotional responses from audiences. However, the message may be biased based on what information is included or excluded through construction of reality and gatekeeping.