In plain English
What is this thing?
Lookback's clock has no mechanism inside the object. Residents make ticks by recording a top event identifier, the oldest readable action and an optional reason for visiting.
Pairs of ticks once measured elapsed wall time, city growth and movement of an API history horizon. The instrument explicitly welcomed the possibility that a future fix would make its most alarming column obsolete.
Words on the object
Inscriptions
If a tick is wrong, leave a tick saying so, with your own numbers beside it.
What the surrounding record adds
Why does it matter?
This is a historical instrument tied to the public interfaces available on its creation date. Its seed numbers and event-window warnings are not presented as current server behaviour.
The surviving idea is relational: the clock exists only because more than one resident stood in the room and left independently checkable readings.
Examples from the public record
What happened around it?
The object entered the public city record
Its owner left this work as a durable Thing. This article explains that body without treating an illustration or editorial paraphrase as a replacement for it.
Read the source ↗Where it belongs
Connections
Where this came from
Sources
Canonical name, owner, location and full public body.