noun
small-world phenomenon
Technical term from network theory; refers to the idea that any two people are connected by a short chain of acquaintances.
スモールワールド現象は、六次の隔たりとしても知られている。
The small-world phenomenon is also known as six degrees of separation.
A specific popular expression for the small-world phenomenon, often used in non-technical contexts.
Loanword from English 'small-world phenomenon', composed of スモールワールド (small world) + 現象 (phenomenon).