THEM: how about you get one hat and one ball  YOU: i would like the 2 books and 1 hat  THEM: two hats for you  YOU: two hats and one book  THEM: no deal  YOU: two books and 1 ball  THEM: no books for you  YOU: no deals until you give up at least one book  THEM: ok you can get one book and one hat  YOU: one book and 2 hats is fair  THEM: nope  YOU: one book and 1 ball, my final offer  THEM: no deal.