Facebook: 6 degrees of separation is now down to just 3.5

 Facebook says that six degrees of separation is now down to 3.5
You must have heard about the famous “six degrees of separation” theory that everyone on the planet is connected to everyone else by six other people. Facebook has just upended this theory, saying that world is more closely connected than you might think.
After studying 1.59 billion people active on the social networking website, the team determined that the number is actually 3.57 — meaning thereby that ther