Poetry affects us in so many ways through "poetic effects." These effects can only be conveyed through words, so poets arrange words carefully so as to create not only a mood, but a message. Individual words can create happiness, sadness, anger, or a range of other emotions. Certain techniques can be used to arrange these words in a way that will create better understanding. For instance, a poem with rhyme and an upbeat rhythm will seldom be used persuasively or to show anger. These devices can make memorable poetry for any purpose. For example, in the poem "In Back of the Real", Allen Ginsberg uses words like desolate, dread, and ugly to describe a mood that is definitely not a happy one.