Tim Ingold writes about the ways in which human existence is lived along paths rather than in places.
Proceeding along a path, every inhabitant lays a trail. Where inhabitants meet, trails are entwined, as the life of each becomes bound up with the other. Every entwining is a knot, and the more that lifelines are entwined, the greater the density of the knot. (Being Alive, p148)
In one sense, federated wiki is a substantial accumulation of content. See: container words
It is also a loose collection of knots.
Much of the emphasis has been on how to think about what sits in each independent collection, or what is done with the things that make up the content, and there is scrupulous attention to the question of collective ownership.
But the experience of leaving a path is a singular one.