THEM: i'll take 1 ball, 1 hat and the book. you can have the rest.  YOU: no deal  THEM: i'll take the book and 1 ball. you can have the rest.  YOU: i have to have the book  THEM: well, if you just give me the book, you can have the rest.  YOU: i have to have the book to make a deal  THEM: what if i need the book?  YOU: then we cannot make any deal  THEM: the rest don ; t have any value to you /  YOU: they have very little value  THEM: then i guess there is no deal.