In order to grasp the concept of what O.B is, you must first understand what an organization is. An organization is a group of people intentionally organized to accomplish a common goal or a set of goals. An organization can be made up of, as few as two individuals or as many as a thousand people. An example of an organization is the United Nations. The goal of the UN is to maintain international peace, security and the prevention and removal of threats. While there are many members or countries that make up the UN, each member may have a different culture or belief, but it is up to the Secretary General to keep the members organized and goal originated. This example of the UN can be applied to any organization since the purpose of every organization is to achieve a common goal. With members having different cultures and beliefs, it is hard to predict how each member will react, therefore; it is necessary that an organization elect an individual or a manager to steer the organization to the common goal. As a manager, it is his or her responsibility to get work done through other people, by planning, organizing, leading and controlling its members. Not everyone in an organization is receptive or behaves the same way to change, and this is why we study O.B. Organizational Behavior is the study of change and how changes affects individual members in an organization. Some managers try to use interpersonal communication, conflict resolution and intuition to make their peers to be more productive, however; they soon find out that O.B theory is not consistent and can't be applied the same way to different situations. This explains why critics of O.B. say, O.B. is "common sense", and its theories can't be applied like physical sciences. Since O.B. theory can't be applied to every situation the same way, managers are forced to deal with changes that affect the organization by using their management skills.