Rejoicing In White Space

Why do we get joy from the encounter with those pages at the end of a chapter that have only a few lines? The page has mostly blank space and we get to jump ahead quickly to another page with the sense of having gotten away with something. Even if we like the book we are reading, being able to take a sudden leap forward gives us a little boost. Did we somehow cheat and get away with it? Do we just like the break in the pace? Is there a need we get fulfilled to “progress” without effort, a feeling of accomplishment without toil?