There used to be a theory saying that anyone in the world was, on average, six steps away from any other person on Earth. This means that a chain of 'a friend of a friend' can be made to connect any two people in six steps.
There was a play and even a film about this.
But globalization has changed this too: Facebook and the University of Milan have carried out a new research that proves the new distance is now only 4.74. The results were published on Facebook site last Monday.
To calculate this, they used the 721 million active users of FB (one tenth of the world's population) and the relationships between them (69 billion).
It's a small small world... and getting smaller!
