User:Tribe of Tiger/Six degrees of separation

Six degrees of separation is the idea that all people are six, or fewer, social connections away from each other. As a result, a chain of "a friend of a friend" statements can be made to connect any two people in a maximum of six steps. It was originally set out by Frigyes Karinthy in 1929 and popularized in an eponymous 1990 play written by John Guare. It is sometimes generalized to the average social distance being logarithmic in the size of the population. (Copied from WP article.)

My version of this requires that the parties speak face to face.