There are three factors in Scientology which are of the utmost importance in handling life. These three factors answer the questions: How should I talk to people? How can I give new ideas to people? How can I find what people are thinking about? How can I handle my work better?

These three factors in Scientology are called the ARC triangle. The abbreviation ARC (pronounced A-R-C rather than arc) is one of the most useful terms yet devised.

The ARC triangle is called a triangle because it has three related points. The first of these points is affinity. The second of these points is reality. The third of these points and the most important is communication.

These three factors are related. By affinity we mean emotional response. We mean the feeling of affection or lack of it, of emotion or misemotion (irrational or inappropriate emotion) connected with life. By reality we mean the solid objects, the real things of life. By communication we mean an interchange of ideas between two terminals (persons who can receive, relay or send a communication). Without affinity there is no reality or communication. Without reality there is no affinity or communication. Without communication there is neither affinity nor reality.

Application of the ARC triangle in the day-to-day circumstances one encounters in life requires an understanding of each of the triangle’s components and their interrelationship.

Affinity is any emotional attitude which indicates the degree of liking for someone or something.

Reality is the degree of agreement reached by people. It also includes the solid objects, the real things of life.

Communication is the interchange of ideas across space.