Buchanan's "Small World"

Buchanan's "Small World" concept refers to the idea that, despite the vast size of the world, it is surprisingly interconnected through a relatively small number of social or professional links. This notion, known as the "small-world phenomenon," suggests that any two people are connected through a short chain of acquaintances. For example, you might know someone who knows someone else, and so on, linking you to virtually anyone globally. This concept highlights how social, communication, and network structures facilitate rapid and efficient connections across large populations.