THEM: can i have the book and the ball you keep all the hats?  YOU: no i need the book and 2 hats. you can have the ball and 1 hat.  THEM: that doesn't work for me. hats hold 0 value to me.  YOU: then i will take the book and all the hats. you can have the ball.  THEM: not sure how that seems fair to anyone. i'll take the ball and the book you keep the hats.  YOU: that doesn't work for me. i need the book for sure.  THEM: alright, no deal.  YOU: alright no deal.