Here are some of the key lessons from this chapter to remember: ■ A good negotiator prepares, going in, to be ready for possible surprises; a great negotiator aims to use her skills to reveal the surprises she is certain to find. ■ Don’t commit to assumptions; instead, view them as hypotheses and use the negotiation to test them rigorously. ■ People who view negotiation as a battle of arguments become overwhelmed by the voices in their head. Negotiation is not an act of battle; it’s a process of discovery. The goal is to uncover as much information as possible.