In the PDF, there is a famous case study of two brothers quarreling over an orange. One wanted the rind for baking; the other wanted the fruit for juice. By arguing over the position (the orange), they almost lost the solution. By discussing interests (rind vs. pulp), they win-win.
If you want, I can:
, being a "negotiation genius" means moving beyond simple compromise to actively creating and claiming value in every interaction. The Blueprint of a Negotiation Genius negotiation genius pdf