Answer:
It allows him to separate his emotions from the events.
Step-by-step explanation:
Walter Dean Myers's novel Monster revolves around the murder trial that convicted James King while Steve Harmon was released. Through the third omniscient narrator and also at times from the diary entry point of view of Steve, the story presents the trial and also the numerous emotions and the way they are looked at even by their own counsels.
When Steve looks at the trial from a different perspective, from the point of view of the lawyers, the others involved in the trial, he was able to see the facts as they are and not favoring his own feelings. This detachment helps or allows him to separate his emotions from the events, away from his own fears and thoughts that may hinder his perception of what the trail entails. And through his act of writing about the trial as a screenplay, it allows him to see the scene from different perspectives, the viewpoints of the other people, the movement, the scene, the problem, and the murder.