what are you asking?
dramatic irony occurs when the reader/audience knows more about a character's situation than the character does. the one main effect is that it gives the reader a sense of superiority, or detached superiority. the reader not only seemingly discovers what is revealed, but feels superior for doing so.
put the trash into the back of the truck and drive the truck to the back. then you must unload the truck.
of its set of steps....