| Through just five or six intermediaries,
| |
| | extremes, when the network was neither
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| you could be linked to millions of
| |
| | entirely regular nor utterly random. They
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| others. It is the notion behind what has
| |
| | expected the number of handshakes needed
|
| been dubbed the small world effect.It has
| |
| | to link people to drop as the random
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| happed to most of us, and it's virtually
| |
| | links grew.But what they discovered was
|
| guaranteed to happen at again -
| |
| | startling: just a tiny number of random
|
| especially if you attend a social
| |
| | links was enough to "short-circuit" an
|
| gathering. Whenever you have people eager
| |
| | otherwise huge, regular network, allowing
|
| to talk with one another, the chances are
| |
| | apparently unrelated friends to be linked
|
| that some will find that they have
| |
| | in just a few handshakes.The computer
|
| friends and acquaintances in common. It
| |
| | revealed how easy it is to turn even a
|
| is, as they say, a small world.It may be
| |
| | vast network into a small world: if only
|
| a common enough experience, but the
| |
| | one in 100 people have a random link to
|
| so-called small world effect is turning
| |
| | anyone else in the network, the average
|
| out to have some pretty big consequences.
| |
| | number of handshakes drops ten-fold.THEY
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| In the last 18 months it has become one
| |
| | ARE EVERYWHEREBut computer simulations
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| of the hottest subjects in science. Now
| |
| | are one thing; can small worlds be
|
| some believe it could revolutionize the
| |
| | created so easily in the real one? Watts
|
| way we think about everything from
| |
| | and Strogatz set about searching for a
|
| economic crashes to globalization.The
| |
| | huge real-life network that they could
|
| story of how an apparently trivial social
| |
| | probe for signs of the small world
|
| phenomenon turned out to have far from
| |
| | effect. They found the perfect, if
|
| trivial implications has its origins in a
| |
| | unlikely, example in the Internet Movie
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| bizarre experiment carried out over 30
| |
| | Database, a computer searchable catalogue
|
| years ago by psychologist Stanley
| |
| | with the names of over 200,000 actors and
|
| Milgram.Milgram was trying to uncover the
| |
| | the films they have appeared in.Analyzing
|
| connections that lurk in our networks of
| |
| | the database, Watts and Strogatz found
|
| friends and acquaintances, and hit upon a
| |
| | that the typical actor has worked with
|
| novel way of revealing them. He recruited
| |
| | around 60 others. If the showbiz network
|
| people in various US states and sent each
| |
| | were completely regular, with no random
|
| of them a package, together with some
| |
| | short-circuits, that figure would imply
|
| instructions.These revealed that the
| |
| | that you'd typically have to go through
|
| packages were actually intended to two
| |
| | 1,800 other actors and their films to
|
| people picked by Milgram, who gave their
| |
| | link one actor to another. Yet the
|
| names and some vague clues about where
| |
| | computer showed that it is possible to
|
| they lived, their occupation and age.
| |
| | link any actor to any other via just
|
| What he did not give, however, was a
| |
| | three intermediaries. The vast movie
|
| precise postal address. The participants
| |
| | business is really a small world.In fact,
|
| were then told to send the packages to
| |
| | this had been known for years by movie
|
| whichever of their acquaintances they
| |
| | buffs who play the so-called Kevin Bacon
|
| judged most likely to know the targets
| |
| | Game. The aim of the game is to link the
|
| personally and be able to make the final
| |
| | eponymous American actor to any other via
|
| delivery.Keeping track of the postings,
| |
| | the fewest number of
|
| Milgram made the stunning discovery that
| |
| | intermediaries.Players were often struck
|
| the packages typically reached the two
| |
| | by how often they could answer with the
|
| target people after passing through the
| |
| | names of very few actors. For example,
|
| hands of just five other people. Later
| |
| | Bacon can be linked to Charlie Chaplin in
|
| experiments produced similar results,
| |
| | just three steps: Bacon played in a film
|
| making the conclusion inevitable. It
| |
| | with Laurence Fishburn, who in turn was
|
| seems that, on average, everyone in
| |
| | in a film with Marlon Brando, who himself
|
| America from arms dealer to zoo keeper
| |
| | once appeared with Chaplin.Watts and
|
| can be connected to everyone else via a
| |
| | Strogatz had confirmed what many players
|
| chain of just five or six
| |
| | suspected was the explanation: the
|
| intermediaries.It is a result that
| |
| | "short-circuiting" effect of a handful of
|
| becomes more bizarre the more you think
| |
| | actors whose careers span different eras,
|
| about it. Sociologists estimate that we
| |
| | genres and cultures. For example, by
|
| each typically have around 300 or so
| |
| | starring in both Lethal Weapon and
|
| acquaintances - people we're on
| |
| | Hamlet, Mel Gibson short-circuits the
|
| first-name terms with. That suggests
| |
| | all-action and classical genres, while
|
| we're just one hand-shake (or email) away
| |
| | martial arts actor Bruce Lee links the
|
| from 300 people, two away from 90,000,
| |
| | Chinese film industry to Hollywood.The
|
| three away from 27 million and so
| |
| | world of showbiz is now recognized as a
|
| on.Viewed this way, the real surprise
| |
| | classical small world. That is, it is
|
| about Milgram's research is that it takes
| |
| | made up of lots of little cliques of
|
| as many as five or six handshakes to
| |
| | actors, most of whom stay in their own
|
| connect every American to every other. An
| |
| | patch of the industry, mixed in with a
|
| average of just four should suffice to
| |
| | few highly versatile ones with random
|
| connect up to 250 millions inhabitants of
| |
| | links right across the acting network who
|
| the US.But there is a big assumption in
| |
| | thus link every actor to every other via
|
| this quick calculation: that our 300
| |
| | very few steps.When Watts and Strogatz
|
| friends are randomly spread throughout
| |
| | published their findings in the leading
|
| the population so that every American is
| |
| | science journal Nature, it triggered an
|
| likely to know, say, Alan Greenspan as Al
| |
| | explosion of media coverage. But it also
|
| at the corner store. But the fact is that
| |
| | sparked interest among academics in a
|
| our friends tend to fall into cliques:
| |
| | diverse range of fields, all wondering
|
| people who have similar levels of
| |
| | whether small world effects are at work
|
| education, interests and opinions.This,
| |
| | in their own patches.The corporate world
|
| however, just makes Milgram's findings
| |
| | does show signs of being under the
|
| even more baffling: for if all our
| |
| | influence of small world effects,
|
| friends were confined to such rigid
| |
| | according to Bruce Kogut of the Wharton
|
| cliques, we would hardly ever discover we
| |
| | School of Business at the University of
|
| have friends in common. Each American,
| |
| | Pennsylvania, and Gordon Walker at the
|
| for example, would then be separated by
| |
| | Cox School of Business at the Southern
|
| an average of almost one million
| |
| | Methodist University in Texas.Kogut and
|
| handshakes...250 million divided by 300
| |
| | Walker applied Watts and Strogatz's
|
| from each other. By that reckoning,
| |
| | methods to the ownership networks
|
| Milgram should have died long before any
| |
| | spanning over 500 of Germany's biggest
|
| of his packages reached their
| |
| | corporations. Predictably, they found
|
| targets.There is clearly something odd
| |
| | lots of cliques in the ownership of
|
| going on here. Our networks of friends
| |
| | firms, the result of various tie-ups and
|
| are not randomly spread across society.
| |
| | mergers. But they also found that the
|
| Yet they still allow us to be linked to
| |
| | short-circuiting effect of a few
|
| each other via few intermediaries, so
| |
| | corporations typically allowed the
|
| that we often end up discovering "It's a
| |
| | ownership of any one firm to be linked to
|
| small world". How do they do it?It was
| |
| | any other via just four intermediaries.
|
| this that intrigued Duncan Watts, in 1996
| |
| | In other words, for all their diversity,
|
| still a graduate at Cornell University.
| |
| | Germany's biggest firms actually form a
|
| Watts had been working on a nice, solid
| |
| | cosy small world.This explains why firms
|
| doctorate about the chirps of lovelorn
| |
| | with apparently tenuous links to one
|
| crickets. But he had run into a problem:
| |
| | another can still show similar corporate
|
| how do the crickets fall into step so
| |
| | behavior. But it may also have
|
| quickly? Was each listening to all his
| |
| | implications for the way these companies
|
| fellow crickets, or just to his closest
| |
| | deal with globalization.Small world
|
| neighbors?Then Watts remembered a funny
| |
| | theory shows it only takes a few random
|
| bit of folklore that his father had told
| |
| | links to short-circuit a vast network. So
|
| him: that every American is just a few
| |
| | it's likely that the whole corporate
|
| handshakes away from knowing the
| |
| | world has already become a small
|
| president of the United States. Watts
| |
| | world.The study of small worlds is still
|
| wondered if there was a connection
| |
| | in its infancy, yet it is already clear
|
| between this apparent bit of folklore and
| |
| | that their presence holds both benefits
|
| the problem he was trying to solve and
| |
| | and threats. Economists and business
|
| perhaps many others too.Watts expected
| |
| | studies experts are likely to reveal many
|
| his idea would be ridiculed by his
| |
| | more examples of small worlds and their
|
| advisor, Steve Strogatz at Cornell's
| |
| | implications in the years ahead.Selling
|
| department of theoretical and applied
| |
| | on eBay and the Internet is still a
|
| mechanics. Instead, Stogatz also fell
| |
| | relatively a new phenomenon with
|
| under the spell of the big mystery of the
| |
| | unprecedented opportunity. Adam
|
| small world effect, and the two joined
| |
| | Ginsberg, recently featured on NBC's
|
| forces to try and solve it.They began by
| |
| | Today Show is an author and educator and
|
| using a computer to create lots of
| |
| | has built a small fortune selling on
|
| networks of virtual "friends", and
| |
| | eBay. As an early Internet pioneer, Adam
|
| measuring how many "handshakes" were
| |
| | discovered a system for generating wealth
|
| needed to connect one friend to another
| |
| | - through the power of the eBay
|
| in a totally different part of the
| |
| | marketplace.Adam personally sold over
|
| network.At one extreme were the utterly
| |
| | $20,000,000 on eBay and the Internet in
|
| regular networks, where every friend only
| |
| | the last three years. Currently he
|
| knows those right next to them. Devoid of
| |
| | travels the world sharing his knowledge,
|
| any long range connections capable of
| |
| | expertise and experience with others.
|
| linking, say, Bill Clinton to some
| |
| | Adam's book, "How to Buy, Sell & Profit
|
| store-keep in Hawaii, these networks
| |
| | on eBay", went to #1 on Amazon within 3
|
| typically demanded lots of handshakes
| |
| | days of being released. Learn how Adam
|
| before one person could be connected to
| |
| | has solved the mystery of success on eBay
|
| another. Right at the other extreme were
| |
| | and how you can apply his system to
|
| totally random networks, where people
| |
| | capitalize on this hot new money making
|
| were just as likely to have personal
| |
| | opportunity. Adam has also created
|
| friends in the White House as in Hawaiian
| |
| | several best selling e-books and software
|
| stores.Watts and Strogatz were intrigued
| |
| | to enable you to enhance your ability to
|
| by what happened between these two
| |
| | succeed.
|
