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It is 7 AM and North Pole is bathing in the first light of dawn reflecting from the snow. The Great Hall, ground zero of operations and logistics, is hustling and bustling with elves gathering for their morning briefing. Sugarplum Mary, the North Star Elf-Chef, is serving hot cocoa with fresh peppermint and gingerbread cookies.

The digital thread is dynamic. Many of the federated data repositories are configuration-managed, and it is critical for the inter-model connections to be version-sensitive. Consistency of a digital thread implies that the version of a connected data element is the same now as when the connections to it were created or most recently updated. If