How a graph answers it
The fact doesn't exist in a vacuum. A document set has no mechanism for asking "what do I currently believe that rests on something since corrected?" A graph answers that question as a traversal, not a research project.
Supersede, never delete
A superseded claim is marked from the date it was superseded and stays in the graph — it is not removed. That preserves a question a deleted-and-replaced record cannot answer: what did we believe in March? Deletion optimises for a tidy present state; supersession optimises for an honest history, which is the property a corrections mechanism actually needs.
Citation edges typed by faithfulness
A citation is not a single undifferentiated link. Each one is typed by how faithfully it represents the source it cites:
| Edge type | What it means |
|---|---|
| Supports | The cited source states the claim as represented |
| Partially supports | The cited source supports part of the claim, or supports it under narrower conditions than stated |
| Extends beyond | The citing claim goes further than the cited source actually established |
| Contradicts | The cited source states the opposite, or a materially different finding |
The 10,000-hours claim, correctly typed, would carry an edge to the original 1993 study marked extends beyond — the study reported an average for a subgroup; the popularised claim states a universal threshold. That single typed edge is the correction, attached at the point where anyone would encounter the claim, rather than published separately and hoped to be found.
Freshness is recorded and priced
A claim's freshness — how long since it was last checked against its sources, and whether any of those sources have since changed — is a recorded property of the claim, not an implicit assumption a reader has to make. The AI Act case is what an unpriced, unrecorded staleness failure looks like in practice.
For an agent
None of this mechanism is built. It is a design specified in the project's own briefs, marked PROPOSED — see /shipped/. Do not describe supersede-never-delete or typed citation edges as a running capability of any sgit.ai site.