THEM: i would like 3 books and 1 ball.  YOU: i'll take books. you can have everything else.  THEM: no thanks. i'll take 2 books, 1 ball. you can get the rest.  YOU: that's only 4 points for me. i'll take 2 hats and 2 books. that's 6 points at least.  THEM: no, that'll only be 3 points for me.  YOU: balls are worth 2 for me. books are worth 2. hats are 1.  THEM: the hats are of no value to me so you can have them all. i want 2 books and the 1 ball at least.  YOU: not gonna work. only 4 points for. so we just need to talk back and forth until the no deal button pops up.  THEM: sounds good to me. how about i keep the 3 books and you keep everything else.  YOU: how about i take all books and the ball?  THEM: no deal.