The term paradigm comes from the Greek paradeigma, which translates as "model, pat-tern, or example." First introduced years ago by the philosophy of science historian Thomas Kuhn, the term paradigm is now used to mean a broad model, a framework, a way of thinking, or a scheme for understanding reality. In the words of popular futurist Joel Barker, a paradigm simply establishes the rules (written or unwritten), defines the boundaries, and tells one how to behave within the boundaries to be successful.