.six.degrees.of.separation.

In 1929, a Hungarian author named Frigyes Karinthy published a volume of short stories titled "Everything is Different." One of these pieces was titled "Chains," or "Chain-Links." The story investigated in abstract, conceptual, and fictional terms many of the problems that would captivate future generations of mathematicians, sociologists, and physicists within the field of network theory. In particular, Karinthy believed that the modern world was shrinking due to the ever-increasing connectedness of human beings. Due to technological advances in communications and travel, friendship networks could grow larger and span even greater distances. Karinthy posited that despite great physical distances between the globe's individuals, the growing density of human networks made the actual social distance far smaller. As a result of this hypothesis, Karinthy's characters believed that any two individuals could be connected through at most five acquaintances. In his story, the characters create a game out of this notion.

Six degrees of separation refers to the idea that, if a person is one "step" away from each person he or she knows and two "steps" away from each person who is known by one of the people he or she knows, then everyone is no more than six "steps" away from each person on Earth. Several studies, such as Milgram's small world experiment, have been conducted to empirically measure this connectedness.

So here is some proof of how small our world is:

Our friend Isti with Bono from U2 in Sarajevo

Our friend Kyle with Henry Cusick (Desmond from LOST) in Rome