When content appears in 3+ contexts, extract a single…
When a contained item appears in three or more contexts requiring synchronization, extract it into a referenced shared source with a single canonical version rather than maintaining multiple copies.
When This Fires
- When you copy-paste the same content into a third document
- When updating information and realizing it exists in multiple places
- During knowledge base maintenance when discovering diverged copies
- When AI retrieval returns inconsistent versions of the same information from different documents
Common Failure Mode
Maintaining copies because extraction feels like overhead: "It's easier to just copy it." For the first two copies, maybe. By the third, the synchronization debt guarantees that at least one copy will diverge — and the diverged copy will eventually be the one someone relies on for a decision.
The Protocol
When content appears in a third context: (1) Extract the content into a single canonical note or document. (2) In each original context, replace the embedded content with a reference (link, embed, or transclusion depending on your tools). (3) All future updates happen at the canonical source only. References automatically reflect changes. (4) Periodically verify that references still resolve — broken references are worse than copies because they provide no content at all.