THEM: if i can have the hat and three balls you can have the book and one ball  YOU: hat is also the only thing of value ; the only way i can give up the hat is if i can take everything else. i'm also open to the same offer reversed (you take everything and take the hat)  THEM: i will take the hat and you can have everything else. if that works for you  YOU: its not the best, but it seems fair enough, deal  THEM: okay thank you.