SOCIAL SCIENCE: Ignorance, Knowledge, and Out...

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Science 8 August 2003:
Vol. 301. no. 5634, pp. 773 - 774
DOI: 10.1126/science.1088508
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Perspectives
SOCIAL SCIENCE:
Ignorance, Knowledge, and Outcomes in a Small World
Mark Granovetter
Thirty-six years ago, Stanley Milgram in his famous "small world" experiment found that every individual in the United States is linked to every other through a short chain of social ties, with an average chain length of six people. In a Perspective,Granovetter discusses a large-scale study of 60,000 e-mail users (Dodds et al.) that confirms Milgram's original findings and delves deeper into understanding the social networks that connect us all. The author is in the Department of Sociology, Stanford University, Stanford, CA 94305-2047, USA. E-mail:mgranovetter@stanford.edu