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Library / First Principles Framework (FPF) - Core Conceptual Specification
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C.27.TA:4.5 - Currentness, Freshness, And Validity Window

A currentness or freshness claim uses the same four-part minimum: exact EntityOfConcern, current or fresh predicate, reference time or edition, and validity interval or window. A source, benchmark, model, dashboard, or claim may be fresh enough for one use and stale for another.

Add a source-use boundary, currentness condition, refresh condition, or reopen condition only when the receiving use changes when that value changes. Use the direct source, evidence, benchmark, assurance, or refresh pattern for the separate provenance, parity, assurance, or refresh-work claim.