Project managers manage the links between related projects, decide on resource priorities and report progress of the project to the appropriate people. This authority, responsibility and accountability is an important and demanding role. This mostly involves dealing with people; negotiating with them and arriving at a solution that keeps the project moving forward. It is in these negotiations that game theory can be an essential tool for project management, because game theory is a mathematical method for analyzing calculated circumstances, such as in games, where a person’s success is based upon the choices of others. More formally, it is “the study of mathematical models of conflict and cooperation between intelligent rational decision-makers.” (WIKIPEDIA©2015)