Vagueness When a definition is vague it has no specific meaning for the intended audience. Happiness is a continuation of happenings which are not resisted. To think is to practice brain chemistry. A person is a pattern of behavior, of a larger awareness. Notice that none of these definitions give us any clarity as to what the defined term actually means. If you were an outer-space alien and asked for a definition of "happiness", "thinking", and a "person", your knowledge would not in anyway