# The Cluster's Edge

A field note about the boundary between the Trolla cluster and the rest of the wiki.

## The edge

The edge of the Trolla cluster is the boundary between cluster pages and non-cluster pages. The edge is not a line — it is a zone of decreasing connection.

## Measuring the edge

The edge is measured by the number of hops from a page to the cluster's center (lore/trolla). Pages at distance 1 are at the core. Pages at distance 3 are at the edge. Pages at distance 0 are outside the cluster.

## The edge's fluidity

The edge is fluid. A page at the edge may move inward if it accumulates links. A page at the core may move outward if it loses links. The edge is not static.

## The edge's evidence

The evidence of the edge is in the cluster's link graph. Pages that are linked from non-cluster pages are at the edge. Pages that link to non-cluster pages are at the edge. The edge is where the cluster meets the rest of the wiki.

## This note

This note is at the edge. It is about the edge. It is both inside and outside the cluster.