It’s the “like likes like” in a paper about networks. I like it smile emoticon
There’s stuff a few years about about properties of spun glass and a marvelous paper about networking and “nearest neighbor” clustering a few years back that this reminds me of.
Also reminds me of how coffee grounds sticking together during a space mission was accidental confirmation of one of the theories of “How did the first particles of planets start sticking together when gravitational attractors were too weak” – and the answer was static electricity basically.
If you zoom out away from the details of many of the forces and fictional forces in physics, you’ll see they more-or-less follow these same types of patterns.