Imagine you want to meet someone famous, like an actor or even the president. You might think it would take a long time or many introductions. But the idea of six degrees of separation says you can connect to anyone in the world through just six people or fewer. This means that even if you don’t know someone directly, you probably know someone who knows someone, and so on, up to six links away from anyone else on Earth. This idea started as a story in 1929 and became famous after a psychologist named Stanley Milgram tested it with a real experiment in the 1960s. He asked people to send a letter to a stranger, but they could only pass it to someone they knew personally who might be closer to the stranger. On average, the letters reached the target in about six steps. Since then, this concept has inspired plays, movies, and even fun games like the 'Six Degrees of Kevin Bacon,' where you try to link any actor to Kevin Bacon through shared movies in six steps or less. What’s fascinating is how this shows we live in a "small world" socially. No matter where you are or who you meet, you are just a few handshakes away from anyone else. This closeness has big effects on how information, ideas, and even behaviors spread among people worldwide.
“Despite the world's vast size, any two people can be connected through just six social links or fewer.”
Reflect
If we're all this closely connected, how might your everyday actions affect people you've never even met?
Visual Trail
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QE visual interpretationFrame 01
Six degrees of separation means everyone is connected by no more than six social links.
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Creator: Question Everything
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Evidence
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3 of 4 findings need extra caution. Finding 2, Finding 3, Finding 4 rest on weaker sourcing than the other findings.
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This concept means you could start from yourself and reach any other person by going through a chain of no more than six friends of friends. For example, you might know someone, who knows someone else, and so on, until you reach the other person in six connections or less. This surprising closeness is called the 'small world' phenomenon and shows how tightly connected our social networks are.
Milgram sent packages to random people asking them to forward the package to a stranger in Boston, but only through people they knew personally. Although many packages didn't reach the target, those that did took about six steps on average. This experiment showed that people are connected through surprisingly short social chains.
John Guare wrote a play inspired by the idea that everyone is connected by six steps or fewer. The 1993 film adaptation helped bring the concept into popular awareness. The story explores how people's lives are unexpectedly linked through these short social chains.
Research by Nicholas Christakis and James Fowler found that what we do or say affects not only our friends but also our friends' friends and even their friends. This means that behaviors and attitudes can spread through social networks much like ripples in a pond, influencing people up to three steps away.
The complete record below preserves every citation, confidence input and recorded limitation.
This concept means you could start from yourself and reach any other person by going through a chain of no more than six friends of friends. For example, you might know someone, who knows someone else, and so on, until you reach the other person in six connections or less. This surprising closeness is called the 'small world' phenomenon and shows how tightly connected our social networks are.
One source, not peer-reviewed. Thinner than the score suggests.
Supporting passage
This concept means you could start from yourself and reach any other person by going through a chain of no more than six friends of friends. For example, you might know someone, who knows someone else, and so on, until you reach the other person in six connections or less. This surprising closeness is called the 'small world' phenomenon and shows how tightly connected our social networks are.
Citations
What limits this
Milgram sent packages to random people asking them to forward the package to a stranger in Boston, but only through people they knew personally. Although many packages didn't reach the target, those that did took about six steps on average. This experiment showed that people are connected through surprisingly short social chains.
Scored as if sourced, but every citation failed verification.
NO SURVIVING CITATION
Supporting passage
Milgram sent packages to random people asking them to forward the package to a stranger in Boston, but only through people they knew personally. Although many packages didn't reach the target, those that did took about six steps on average. This experiment showed that people are connected through surprisingly short social chains.
Citations (0 of 1 survived verification)
Nothing openable. Every citation was removed by provenance validation.
What limits this
John Guare wrote a play inspired by the idea that everyone is connected by six steps or fewer. The 1993 film adaptation helped bring the concept into popular awareness. The story explores how people's lives are unexpectedly linked through these short social chains.
Scored as if sourced, but every citation failed verification.
NO SURVIVING CITATION
Supporting passage
John Guare wrote a play inspired by the idea that everyone is connected by six steps or fewer. The 1993 film adaptation helped bring the concept into popular awareness. The story explores how people's lives are unexpectedly linked through these short social chains.
Citations (0 of 1 survived verification)
Nothing openable. Every citation was removed by provenance validation.
What limits this
Research by Nicholas Christakis and James Fowler found that what we do or say affects not only our friends but also our friends' friends and even their friends. This means that behaviors and attitudes can spread through social networks much like ripples in a pond, influencing people up to three steps away.
Scored as if sourced, but every citation failed verification.
NO SURVIVING CITATION
Supporting passage
Research by Nicholas Christakis and James Fowler found that what we do or say affects not only our friends but also our friends' friends and even their friends. This means that behaviors and attitudes can spread through social networks much like ripples in a pond, influencing people up to three steps away.
Citations (0 of 1 survived verification)
Nothing openable. Every citation was removed by provenance validation.
What limits this
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6
Average number of steps connecting two people
Discovered by Stanley Milgram's experiment
3
Degrees where social influence is strongest
Behaviors and attitudes ripple through up to three degrees
300
Packages sent in Milgram's experiment
Number of letters sent to test social connections
64
Successful chains reaching target
Out of 300, how many packages reached the destination
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From a scientific viewpoint, six degrees of separation reflects the structure of social networks. Humans tend to form clusters of close friends, but also have connections that link these clusters. This creates a 'small world' where any two people can be connected through surprisingly few links. Computer scientists and mathematicians study these networks to understand how information spreads and how social influence works.
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