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● vcn #33 widget · wing iii · temporal edges

WATCH A FACT GO STALE.

Add a fact as three parts: subject, predicate, object. Each fact gets a valid-from timestamp. Add a contradicting fact (same subject + predicate, different object) and the old one gets superseded, not deleted. Then ask: "what was true at <datetime>?" and the graph answers from history. This is the temporal-edge model behind Zep / Graphiti.

tip: try adding "Rayyan, uses, npm" then "Rayyan, uses, pnpm" then "Rayyan, uses, bun" and watch the older edges get superseded in order.

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query · what was true at