The functional role of the page number is simple: it provides order and sequence to a text. And while it is a supremely utilitarian design element, more thought is put into it than you might imagine. Should it go at the top or the bottom of the page? In the right or left margin? Or
"So what we're dealing with now isn't information overload, because we're always dealing with information overload ... thinking about information overload isn't actually describing the problem and thinking about filter failure is."