Sorry guys!!
In my last post I wrote about the wrong Milgram experiment - in which I was also interessted ;)

Now, read about Milgram`s SMALL WORLD EXPERIMENT

Milgram selected some participants from two US cities and created a sort of information packet that was sent to randomly selected participants somewhere else. The task of the participants was to send the package not directly to the target person, provided they doesn`t know them personally, but to one person, who they thought that they might know this person. At the same time, participants were required to record basic information about yourself in a table and they must send a postcard to the scientists, so that they could understand the chain. The result was, that a total of three packets of the target population reached with an average path length of 6. The investigators concluded that each person in the U.S. population is separated of any other person in the United States by an average of six people. 

A little unbelievable, or?