The definition of "reread" is to read anew; read again.
At first, the thought of rereading seems like a waste of time and unnecessary. Why reread a book if you already know the plot and ending? Well let me explain why I reread. There are certain classics and favorite books that I reread multiple times. I like to revisit the characters. Perhaps pick up on a small detail I missed while reading the first go-round. It also recreates the scenes and story. My main reason for rereading is to observe changes in my own life. What I interpreted at 16 years old is different from my interpretation as a thirty-year-old. It shows how different I am and how I've grown since first encountering a book.
Can rereading backfire? Unfortunately, it can. It happens on rare occasions that what I thought was a well written book a few years ago is now a mediocre piece. For that reason, I am picky on which books to reread. Sometimes it is best to leave a story where it is.
Do you reread?