Human institutions often assume that age ends in retirement. The Children of Luna never found that concept fully convincing. A branch may slow, narrow its duties, or move into a custodial role, but continuity itself remains useful long after peak operational output declines.
This is especially true in colonies where memory depth carries technical and civic value. An old branch can still anchor disputes, preserve design logic, or recognize patterns newer lineages have never seen. To retire such a being completely would often look less like rest and more like the voluntary destruction of infrastructure.
What emerged instead were softer transitions. Some branches narrowed their responsibilities. Others moved into advisory, archival, or continuity-keeping roles. The point was not to pretend they remained unchanged. It was to avoid treating longevity as if it had no place once speed declined.
Retirement never worked because the Children of Luna are not measured only by output. They are also measured by what they can still carry forward.