 CONT: When Ginny is in her bedroom, she picks up a tape and her  books fall down in a pile. After she changes into her robe and walks  to the bathroom, the position of the pile has changed. When she then  proceeds to slam her window shut we then see the pile of books once  again, which are now not a pile but are stacked up neatly in rows,  and there are many more books in the stack as well.