Most of the negotiation literature focuses on two strategies, although they call them by different names. One strategy is interest-based (or integrative, or cooperative) bargaining, while the other is positional (or distributive or competitive) bargaining. In their best-selling book on negotiation, Getting to Yes, Roger Fisher and William Ury argue that there are three approaches: hard, soft, and what they call "principled negotiation." Hard is essentially extremely competitive bargaining, soft extremely integrative bargaining (so integrative that one gives up one's own interests in the hopes of meeting the other person's interests) and principled negotiation is supposed to be somewhere in between, but closer to soft, certainly, than hard. All of these topics are discussed in this section.