Stanley Milgram from the '60s and '70s, the creator of the small-world experiments, which became later popularized as six degrees of separation, made the point that any two arbitrarily selected people were likely connected from between five to seven intermediary steps.
Stanley Milgram iz 60-ih i 70-ih, kreator mali-svijet eksperimenata, koji su kasnije postali popularni kao šest stupnjeva separacije, i pokazali da postoji velika vjerojatnost da će  se bilo kojih dvoje arbitrarno odabranih osoba povezati u pet do sedam posredovanih koraka.