#Part K - Lexical Debt

Preface node heading:part-k-lexical-debt:85178

#What this page is

This is generated FPF reference text from the specification preface or supporting sections. It helps interpret FPF; it is not FPF Reference product documentation.

#Methodology

Use it to understand how the specification wants to be read, then return to a route, pattern, or work packet for active work. Cite generated IDs only when the wording changes the task decision.

#Content

#Mandatory replacement map for measurement terms

Rule: In all normative content (specifications, data schemas, etc.), the deprecated terms “axis” and “dimension” (and their plural or compound forms) MUST NOT be used to denote a measurable aspect. Use Characteristic in the Tech register instead. Other colloquial terms should be mapped to canonical terms as listed below. In Plain narrative, deprecated aliases may appear only on first use and only if paired with their canonical equivalent for clarity.

#Temporal claim lexical debt from C.27

Retire untyped velocity, acceleration, cadence, agility, rhythm, inertia, and dynamics language when it is used outside a named C.27, C.16, or A.3.3 reading. Repair each occurrence to one of: ordinary prose, Dyn0 state reading or snapshot, Dyn1 measured rate or trend, Dyn2 intervention-sensitive temporal claim, C.16 measurement construction, or A.3.3 reusable transition law or model.

Russian/English Plain-Tech twins for authoring:

#Migration debt from A.2.6 (Scope, ClaimScope, WorkScope)

#Deprecations (normative)

The following terms MUST NOT name scope objects in normative text, guards, or conformance blocks:

• applicability, envelope, generality, capability envelope, validity (as a characteristic name).

Use instead:

• U.ClaimScope (Claim scope, nick G) for epistemes;
• U.WorkScope (Work scope) for capabilities;
• U.Scope only when explaining the abstract mechanism (not in guards).

#Affected locations and required edits (normative)

Editors SHALL apply the following replacements:

1. Part C.2.2 (F–G–R).

   • Replace any internal definition of “Generality” with a normative reference to A.2.6 §6.3 (Claim scope (G)).
   • Where “abstraction level” is mentioned as G, replace with “Claim scope (where the claim holds)”; keep AT (AbstractionTier) only as optional didactics (non‑G).
   • Ensure composition examples use intersection/SpanUnion for G, not ordinal “more/less general”.

2. Part C.2.3 (Formality F).

   • No change to F itself.
   • Any example that implies “raising F widens G” MUST be rephrased: F changes expression form; G changes only via ΔG.

3. Part A.2.2 (Capabilities).

   • Replace “capability envelope/applicability” with U.WorkScope.
   • Method–Work gates MUST test Work scope covers JobSlice, with measures and qualification windows bound.

4. Part B (Bridges & CL).

   • Add a note: CL penalties apply to R, not to F/G; mapping MAY recommend narrowing the mapped scope (best practice).

5. Part E (Lexicon).

   • Add entries for Claim scope (G), Work scope, Scope (mechanism).
   • Mark listed deprecated terms as deprecated aliases allowed only in explanatory notes.

6. ESG & Method–Work templates.

   • Replace any “applicability”/“envelope” guard phrasing with ScopeCoverage (see §10).
   • Require explicit Γ_time selectors in all scope‑sensitive guards.

#Migration playbook (informative)

1. Inventory scope‑like phrases across your Context (search: applicability, envelope, generality, capability envelope, valid*).
2. Classify each occurrence as Claim scope (episteme) or Work scope (capability); replace any “scope characteristic(s)” with “scope object”, “scope type”, or “USM scope object” depending on sentence grammar.
3. Rewrite guards to use Scope covers TargetSlice + explicit Γ_time; remove “latest”.
4. Publish any required Bridges with CL for Cross‑context usage.
5. Document ΔG changes separately from evidence freshness (R).

#Alias and body-prose continuity (informative)

Existing body prose may keep older phrasing only when it is explanatory and carries no current requirement. All guards, conformance checklists, and state assertions MUST be rewritten to the USM terms and semantics.

#Change Log (normative migration record)

• A.2.6 introduced. Defines U.ContextSlice, U.Scope, U.ClaimScope (G), U.WorkScope; sets algebra and guard patterns.
• Deprecated labels. “applicability / envelope / generality / capability envelope / validity” as characteristic names.
• Edits required. C.2.2 (G = Claim scope), A.2.2 (Work scope for capabilities), Part B (CL→R note), Part E (Lexicon updates), ESG/Method–Work guard templates (ScopeCoverage + Γ_time).
• No change. C.2.3 (F) unchanged; its examples updated only for wording consistency.

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Last Updated: 2026-06-17 — upstream FPF commit 646b0b9b (github.com/ailev/FPF)