Linguistics is the scientific study of human language. It examines language from various perspectives including formal, biological, psychological, historical, and interactional views. Saussure argued that in linguistics, the object of study is not predetermined but rather is created by the viewpoint or perspective adopted by the linguist. Language has three main aspects - as a formal system, a biological trait of humans, and as a psychological faculty of the mind. It is characterized by creativity, recursion, and complexity, distinguishing it from animal communication systems.