First Person Point of View, quizas?

Well, in this post, I'm going to discuss why I think Hemingway chose to have the story told from the point of view of Jake, one of the main characters. The main point of the novel thus far seems to be the development of the characters and their relationships with each other. I've always heard that the best way to understand someone's character is through other people's reactions to them. Hemingway is able to use Jake and his reactions to other characters to give the reader the opinions that Hemingway wants them to have.
The way that Hemingway does this can only be explained by showing what he could have said if the novel was written in third person. When explaining Cohn's history and how that history made people perceive him, he could have said "people were not impressed by Cohn's boxing title." But since he wrote in first person, he was able to say, on page 11, a phrase that is much more impactful- "do not think that I am very impressed by that as a boxing title, but it meant a lot to Cohn." Phrases such as this show a sense of looking down upon Cohn by other characters, causing the reader to do the same. It also enlightens the reader as to Jake's compassion and kindness because he reveals that he will allow Cohn to be happy with his unimpressive title. It is situations like these that show why Hemingway chose to write his novel about character development from the first person point of view.