Peer reviews are essential to the writing process. As an author, it is easy to understand what you are trying to convey, but it may not always translate to the audience. For example, if you are writing a autobiographical narrative, you have lived it and understand what happened. It would be easy to leave out details that are important to the story.  The person hearing or reading the story will be confused and not understand what was missed. This is where a peer review is so essential.  A peer can read through the story and bring attention to the missing details. They can also and give feedback on the flow of the narrative.

Peers are able to catch missed words that do not come up on spell check. For example, typing the word than and meaning to type the word that might go missed.  These small errors can be easily overlooked by the author but can be picked up by the peer reviewing the story.