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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 "friend of a friend" statements can be made to connect any two people in a maximum of six steps. It is also known as the six handshakes rule. The concept was originally set out in a 1929 short story by Frigyes Karinthy, where a group of people play a game trying to connect any person in the world to themselves by a chain of five others. It was popularized in John Guare's 1990 play '' Six Degrees of Separation''. The idea is sometimes generalized to the average social distance being logarithmic in the size of the population. Early conceptions Shrinking world Theories on optimal design of cities, city traffic flows, neighborhoods, and demographics were in vogue after World War I. These conjectures were expanded in 1929 by Hungarian author Frigyes Karinthy, who published a volume of short stories titled ''Everything is Different.'' One of th ...
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Six Degrees Social Network
6 is a number, numeral, and glyph. 6 or six may also refer to: * AD 6, the sixth year of the AD era * 6 BC, the sixth year before the AD era * The month of June Science * Carbon, the element with atomic number 6 * 6 Hebe, an asteroid People * Alphonse Six (1890–1914), Belgian football player * Didier Six (born 1954), former French international footballer * Franz Six (1909–1975), Nazi official * Frederick N. Six (born 1929), Justice of the Kansas Supreme Court * James Six (1731–1793), British scientist * Jan Six (1616-1700), an important cultural figure in the Dutch Golden Age * Robert Six (1907–1986), Chief Executive Officer of Continental Airlines between 1936 and 1981 * Regine Sixt, German businessperson * Valérie Six (born 1963), French politician * Perri 6 (an extremely rare surname), social scientist * Six family, family of regents of Amsterdam, founded by Jan Six Music * Six (band), an Irish pop band created by a TV reality show * ''Six'' (musical) ...
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Stanley Milgram
Stanley Milgram (August 15, 1933 – December 20, 1984) was an American social psychologist, best known for his controversial experiments on obedience conducted in the 1960s during his professorship at Yale.Blass, T. (2004). ''The Man Who Shocked the World: The Life and Legacy of Stanley Milgram''. Milgram was influenced by the events of the Holocaust, especially the trial of Adolf Eichmann, in developing the experiment. After earning a PhD in social psychology from Harvard University, he taught at Yale, Harvard, and then for most of his career as a professor at the City University of New York Graduate Center, until his death in 1984. Milgram gained notoriety for his obedience experiment conducted in the basement of Linsly-Chittenden Hall at Yale University in 1961, three months after the start of the trial of German Nazi war criminal Adolf Eichmann in Jerusalem. The experiment found, unexpectedly, that a very high proportion of subjects would fully obey the instructions, al ...
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Duncan J
Duncan may refer to: People * Duncan (given name), various people * Duncan (surname), various people * Clan Duncan * Justice Duncan (other) Places * Duncan Creek (other) * Duncan River (other) * Duncan Lake (other), including Lake Duncan Australia *Duncan, South Australia, a locality in the Kangaroo Island Council *Hundred of Duncan, a cadastral unit on Kangaroo Island in South Australia Bahamas *Duncan Town, Ragged Island, Bahamas ** Duncan Town Airport Canada * Duncan, British Columbia, on Vancouver Island * Duncan Dam, British Columbia * Duncan City, Central Kootenay, British Columbia; see List of ghost towns in British Columbia United States * Duncan Township (other) * Duncan, Arizona * Duncan, Indiana * Duncan, Iowa * Duncan, Kentucky (other) * Duncan City, Cheboygan, Michigan * Duncan, Mississippi * Duncan, Missouri * Duncan, Nebraska * Duncan, North Carolina * Duncan, Oklahoma * Duncan, South Carolina ...
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Steven Strogatz
Steven Henry Strogatz (), born August 13, 1959, is an American mathematician and the Jacob Gould Schurman Professor of Applied Mathematics at Cornell University. He is known for his work on nonlinear systems, including contributions to the study of synchronization in dynamical systems, and for his research in a variety of areas of applied mathematics, including mathematical biology and complex network theory. Strogatz is the host of ''Quanta Magazines ''The Joy of x'' podcast, named after his book of the same name. Education Strogatz attended high school at Loomis Chaffee from 1972 to 1976. He then attended Princeton University, graduating summa cum laude with a B.A. in mathematics. Strogatz completed his senior thesis, titled "The mathematics of supercoiled DNA: an essay in geometric biology", under the supervision of Frederick J. Almgren, Jr. Strogatz then studied as a Marshall Scholar at Trinity College, Cambridge from 1980 to 1982, and then received a Ph.D in applied mathem ...
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Small-world Experiment
The small-world experiment comprised several experiments conducted by Stanley Milgram and other researchers examining the average path length for social networks of people in the United States. The research was groundbreaking in that it suggested that human society is a small-world-type network characterized by short path-lengths. The experiments are often associated with the phrase " six degrees of separation", although Milgram did not use this term himself. Historical context of the small-world problem Guglielmo Marconi's conjectures based on his radio work in the early 20th century, which were articulated in his 1909 Nobel Prize address, may have inspired Hungarian author Frigyes Karinthy to write a challenge to find another person to whom he could not be connected through at most five people.Barabási, Albert-László
. 2003.

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Columbia University
Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhattan, Columbia is the oldest institution of higher education in New York and the fifth-oldest institution of higher learning in the United States. It is one of nine colonial colleges founded prior to the Declaration of Independence. It is a member of the Ivy League. Columbia is ranked among the top universities in the world. Columbia was established by royal charter under George II of Great Britain. It was renamed Columbia College in 1784 following the American Revolution, and in 1787 was placed under a private board of trustees headed by former students Alexander Hamilton and John Jay. In 1896, the campus was moved to its current location in Morningside Heights and renamed Columbia University. Columbia scientists and scholars have ...
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Guglielmo Marconi
Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi (; 25 April 187420 July 1937) was an Italian inventor and electrical engineer, known for his creation of a practical radio wave-based wireless telegraph system. This led to Marconi being credited as the inventor of radio, and he shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy".Guglielmo Marconi: The Nobel Prize in Physics 1909
. nobelprize.org
Marconi was also an entrepreneur, businessman, and founder of The Wireless Telegraph & Signal Company in the

Karinthy
Karinthy ( hu, karint(h)·i, means ''"from Carinthia, Carinthian"''; corresponds to german: Kärntner, sl, Koroški) may refer to: * Frigyes Karinthy - Hungarian writer and translator ** Ferenc Karinthy - Hungarian writer and translator, son of Frigyes Karinthy *** Márton Karinthy - Hungarian writer and theatre director, son of Ferenc Karinthy ** Gábor Karinthy - Hungarian poet, son of Frigyes Karinthy See also * Carantania Carantania, also known as Carentania ( sl, Karantanija, german: Karantanien, in Old Slavic '), was a Slavic principality that emerged in the second half of the 7th century, in the territory of present-day southern Austria and north-eastern ... Hungarian-language surnames Carinthia (state) {{surname ...
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Rule Of Thumb
In English, the phrase ''rule of thumb'' refers to an approximate method for doing something, based on practical experience rather than theory. This usage of the phrase can be traced back to the 17th century and has been associated with various trades where quantities were measured by comparison to the width or length of a thumb. A modern folk etymology holds that the phrase is derived from the maximum width of a stick allowed for wife-beating under English common law, but no such law ever existed. This belief may have originated in a rumored statement by 18th-century judge Sir Francis Buller that a man may beat his wife with a stick no wider than his thumb. The rumor produced numerous jokes and satirical cartoons at Buller's expense, but there is no record that he made such a statement. English jurist Sir William Blackstone wrote in his ''Commentaries on the Laws of England'' of an "old law" that once allowed "moderate" beatings by husbands, but he did not mention thumbs or an ...
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Benoit Mandelbrot
Benoit B. Mandelbrot (20 November 1924 – 14 October 2010) was a Polish-born French-American mathematician and polymath with broad interests in the practical sciences, especially regarding what he labeled as "the art of roughness" of physical phenomena and "the uncontrolled element in life". He referred to himself as a "fractalist" and is recognized for his contribution to the field of fractal geometry, which included coining the word "fractal", as well as developing a theory of "roughness and self-similarity" in nature. In 1936, at the age of 11, Mandelbrot and his family emigrated from Warsaw, Poland, to France. After World War II ended, Mandelbrot studied mathematics, graduating from universities in Paris and in the United States and receiving a master's degree in aeronautics from the California Institute of Technology. He spent most of his career in both the United States and France, having dual French and American citizenship. In 1958, he began a 35-year career ...
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Social Psychology Quarterly
''Social Psychology Quarterly'' is a peer-reviewed academic journal that publishes theoretical and empirical papers in the field of social psychology. The editors-in-chief are Jody Clay-Warner, Dawn Robinson, and Justine Tinkler (University of Georgia). It is published by SAGE Publications on behalf of the American Sociological Association, of which this is an official journal. History The journal was established in 1937 under the title ''Sociometry'' by Jacob L. Moreno, who served as publisher and chair of the editorial committee until 1955. In 1955, Moreno transferred ownership of the journal to the American Sociological Society (now the American Sociological Association), which has published the journal continuously since then. The journal's name was changed to ''Social Psychology'' in 1978 and it obtained its current name in 1979. Abstracting and indexing ''Social Psychology Quarterly'' is abstracted and indexed in Scopus and the Social Sciences Citation Index. According ...
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Psychology Today
''Psychology Today'' is an American media organization with a focus on psychology and human behavior. It began as a bimonthly magazine, which first appeared in 1967. The ''Psychology Today'' website features therapy and health professionals directories and hundreds of blogs written by a wide variety of psychologists, psychiatrists, social workers, medical doctors, anthropologists, sociologists, and science journalists. Online presence and magazine circulation ''Psychology Today'' is among the oldest media outlets with a focus on behavioral science. Its tagline is “Here to Help” and its mission is to cover all aspects of human behavior so as to help people better manage their own health and wellness, adjust their mindset, and manage a range of mental health and relationship concerns. ''Psychology Today'' content and its therapist directory are found in 20 countries worldwide. ''Psychology Today'''s therapist directory is the most widely used and allows users to sort ...
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