Poets, if they're genuine, must keep repeating "I don't know." Each poem marks an effort to answer this statement, but as soon as the final period hits the page, the poet begins to hesitate, starts to realize that this particular answer was pure makeshift that's absolutely inadequate to boot. So the poets keep on trying, and sooner or later the consecutive results of their self-dissatisfaction are clipped together with a giant paperclip by literary historians and called their oeuvre.