Crisis management is the process by which an organization deals with a disruptive and unexpected event that threatens to harm the organization or its stakeholders. The study of crisis management originated with large-scale industrial and environmental disasters in the 1980s. It is considered to be the most important process in public relations. Three elements are common to a crisis: (a) a threat to the organization, (b) the element of surprise, and (c) a short decision time. Venette argues that "crisis is a process of transformation where the old system can no longer be maintained". Therefore, the fourth defining quality is the need for change. If change is not needed, the event could more accurately be described as a failure or incident