While film can serve many purposes, its primary function is to entertain audiences.

The functionalist theory of film argues that film serves a number of important functions in society, including reflecting the values and beliefs of the society in which it is produced.

The Marxist theory of film argues that film is a form of social control, used by the ruling class to maintain its power and control over the working class.

The conflict theory of film argues that film is a form of resistance to social control, used by the working class to challenge the power and control of the ruling class.

The symbolic interactionist theory of film argues that film is a form of symbolic interaction, in which people use symbols to communicate with each other and to make sense of the world around them.

Media cultivation is the process by which film shapes our perceptions of the world by exposing us to certain images and messages over time.

Media priming is the process by which film influences our attitudes and beliefs by making certain issues or ideas more salient in our minds.

Media framing is the process by which film influences our behavior by presenting certain issues or ideas in a particular way.

Sociology of film is the study of the relationship between film and society, including the role of film in culture, the impact of film on individuals and groups, and the ways in which film reflects and shapes social values and beliefs.

Cultural studies is the study of the relationship between film and culture, including the ways in which film reflects and shapes cultural values, beliefs, and practices.

Communication studies is the study of the relationship between film and communication, including the ways in which film communicates messages to audiences and the ways in which audiences interpret and respond to those messages.

Political science is the study of the relationship between film and politics, including the ways in which film influences political attitudes and behaviors and the ways in which politics influences the production and distribution of film.

Economics is the study of the relationship between film and economics, including the ways in which film affects the economy and the ways in which the economy affects the production and distribution of film.

Technology studies is the study of the relationship between film and technology, including the ways in which technology influences the production and distribution of film and the ways in which film influences the development and use of technology.

Environmental studies is the study of the relationship between film and the environment, including the ways in which film affects the environment and the ways in which the environment affects the production and distribution of film.