The movies and books I love are great to re-watch. I glean something new if I take the time to do it, but there is also a sad longing I experience when I realize I will never be able to read a book for the first time again, or watch an especially moving film for the first time again. There is a certain beauty in that unfolding process that can never be recaptured. Whenever I read more about our understanding of deliberately erasing memory, I always think this would be a great use of the technique — to allow us to re-experience the deep and meaningful experiences, for the first time, again.