Bridges

Look for the single person or link that is the only path between two otherwise separate groups. Cut it and the groups stop reaching each other. Unlike a hub, which sits busy inside one cluster, a bridge carries all traffic across a gap.

Look for the single person or link that is the only path between two otherwise separate groups. Cut it and the groups stop reaching each other. Unlike a hub, which sits busy inside one cluster, a bridge carries all traffic across a gap.

Example

In the friend-group sketch, Priya is the only edge between the six climbing friends and the four board-game friends. Every joint invite ran through her. She moved to Denver, that one edge vanished, and the two clusters have not met since.