The raw artefact pulled from a connected external system — a wiki page, a Slack message, a ticket, a file — before or independent of any curation. May never become a Knowledge Item at all.
Very high; scales with the number and size of connected sources
Tied to the source system's own retention, mirrored rather than owned
Only the control-bearing entities were modelled for lifecycle. Defensible as a starting point, but it does leave the entity model uneven, and this is incompleteness rather than a finding.