![]() In the late 1920s, Hungarian writer Frigyes Karinthy described the small-world paradox, in which he proposed there are up to six degrees separating any two people on the planet. Finally, there are degrees of connectivity, or the number of connections an actor has. A connection can also be a coincidence, such as being stuck in the same beer queue at a game. These include family, friendships and professional relationships. Next, there are connections among the actors. In a social network, we usually think of nodes as individual people, but they can also be places or events, such as the Eiffel Tower or a basketball game. Some are directly connected, like London and Paris, others have a few stops between, like Aberdeen and Bordeaux. You can imagine a network like an airline routes map, with cities representing nodes. And these networks have a lot in common.Įach one involves a series of actors, also called nodes. From the office, to volunteering with your kid's basketball team, to swapping pictures with favourite vegan chefs on Instagram, social networks are everywhere - online and in real life. ![]()
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