A memoir is a type of autobiography that focuses on a specific period in the author's life or an experience that holds particular significance for the author.
In a memoir, an author will often use reflective writing to communicate his or her thoughts and feelings—or reflections—about an event, experience, or idea.
In The Invention of Everything Else, the author uses figurative language—language not meant to be taken literally—to describe and compare things in imaginative ways.