You know that assertion that any given person is six degrees of separation away from any other person in the world (that usually being Kevin Bacon)? That is to say, you know someone whose circle of acquaintances includes someone whose circle of acquaintances includes [repeat as needed, up to six times]. . .Kevin Bacon?
Well, this is apparently true, confirmed by a vast study of millions of text messages, with any two people being connected within 6.6 networks. So actually, it’s closer to seven degrees of separation. But still. . . .See Instant-Messagers Really Are About Six Degrees from Kevin Bacon – washingtonpost.com.