I also thought that the meta moments in mouse were important in telling the story. It relates more to the reader and allows the reader to know the overall story of the Holocaust, and that Vladak would survive it. The importance of the meta narrations is that it shows that the characters are self aware the they are going through this tragedy or at least Art Spiegelman the artist and son of a Holocaust survivor. this is important in telling a story that he knows but acknowledging the fact that hearing it and retelling it in your own way are much more difficult than he thought. However he does a good job of trying to get the audience involved with their own visions of his meta narrations of Art Spiegelman and the different things he includes such as when he goes to the house of his doctor and he says in the comic that it would be weird to mention that doctor has a cat as a pet. this entry into the inner views of the characters also is enlightening to show that they as characters are somewhat trapped in a situation that they understand is happening but cant be real. This attitude is similar to peoples reactions to things as horrible as the Holocaust because it truly happened but it is almost stranger than fiction and a tragedy because of that. The breaking the fourth wall is away to show the complexities of portraying the Holocaust in a way that is new but at the same time helps the reader try to understand one survivors story.