Stanley Milgram

Stanley Milgram (August 15, 1933 – December 20, 1984) was an American social psychologist. He is most famous for his controversial study about obedience to authority figures. In these experiments, Milgram showed that about two out of three people would follow orders of an authority figure to the point of risking the life of, or perhaps even killing, an innocent person. He got the idea from the Holocaust. He wrote a book about his experiments called "Obedience to Authority".
The idea of six degrees of separation comes from Milgram's 1967 small-world experiment. It has been criticized a lot, but in 2008 Microsoft found that the average chain of contacts between users of its '.NET Messenger Service' was 6.6 people. A study published in the January 2014 volume of "Computers in Human Behavior" found that the average number of acquaintances separating people in unusual jobs is 3.9, and 3.2 for average Facebook users.
Early life.
Milgram was born to a Jewish family in New York City.