The concept of 3 degrees refers to the idea that anyone in the world is connected to anyone else through a chain of no more than three intermediate acquaintances. This concept, also known as "six degrees of separation," suggests that the world is a highly interconnected place, and that it's possible to link any two people through a relatively short chain of acquaintances. While the idea of 3 degrees is often used to illustrate the concept of six degrees of separation, it's essential to understand the origins and implications of this idea.
Origins of the Concept

The concept of six degrees of separation, and by extension, 3 degrees, was first proposed by Frigyes Karinthy, a Hungarian author, in 1929. Karinthy suggested that anyone in the world could be linked to anyone else through a chain of at most five intermediate acquaintances. This idea was later popularized by the game “Six Degrees of Kevin Bacon,” which challenged players to link any actor to Kevin Bacon through a chain of co-stars in no more than six steps.
Mathematical Foundations
The concept of 3 degrees is rooted in graph theory, which is the study of mathematical structures used to model relationships between objects. In a graph, each object is represented by a node, and the relationships between objects are represented by edges. The degree of a node is the number of edges connected to it, and the distance between two nodes is the minimum number of edges that must be traversed to link them. The idea of 3 degrees suggests that the average distance between any two nodes in a graph representing human relationships is relatively small.
| Network Type | Average Distance |
|---|---|
| Random Network | Log(n) |
| Scale-Free Network | Log(log(n)) |
| Small-World Network | Log(n) |

Key Points
- The concept of 3 degrees is a simplified representation of the idea of six degrees of separation.
- The idea of six degrees of separation was first proposed by Frigyes Karinthy in 1929.
- The concept of 3 degrees is rooted in graph theory and the study of complex networks.
- The average distance between any two nodes in a graph representing human relationships is relatively small.
- Understanding the structure of complex networks is essential for appreciating the potential for information to spread quickly and the importance of strategic networking.
Implications of the Concept

The concept of 3 degrees has significant implications for our understanding of human relationships and the spread of information. It suggests that even in a large and complex network, it’s possible to link any two individuals through a relatively short chain of acquaintances. This idea has been used to explain the rapid spread of diseases, the diffusion of innovations, and the formation of social networks.
Applications in Marketing and Networking
The concept of 3 degrees has been applied in marketing and networking to illustrate the importance of strategic networking and the potential for information to spread quickly through a network. By recognizing the interconnectedness of a network, marketers and networkers can better appreciate the potential for word-of-mouth marketing and the importance of building strong relationships with key influencers.
The concept of 3 degrees is a fascinating topic that highlights the interconnectedness of human relationships and the potential for information to spread quickly through a network. By understanding the origins and implications of this idea, we can better appreciate the importance of strategic networking and the potential for word-of-mouth marketing.
What is the concept of 3 degrees?
+The concept of 3 degrees refers to the idea that anyone in the world is connected to anyone else through a chain of no more than three intermediate acquaintances.
Who first proposed the concept of six degrees of separation?
+The concept of six degrees of separation was first proposed by Frigyes Karinthy, a Hungarian author, in 1929.
What are the implications of the concept of 3 degrees?
+The concept of 3 degrees has significant implications for our understanding of human relationships and the spread of information, including the potential for word-of-mouth marketing and the importance of strategic networking.