nf.epistemic.observer

Observer Normal Form (ObsNF)

Contract ID: nf.epistemic.observer | Family: epistemic | Index Status: draft | AuthorityEffect: None

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1. Executive Summary & Metadata

Observer Normal Form (ObsNF) enforces structural normalization and explicit defect routing in the epistemic regime.

Property	Value
Canonical ID	nf.epistemic.observer
Short Name	ObsNF
Full Name	Observer Normal Form
Family	epistemic (Observer-Relative Epistemic, Freshness, Context, Provenance & Distinguishability Contracts)
Qualification	Extended Form Contract (Normal Form Contract)
Data / Math Posture	at_rest
Index Status	draft
Theory Status	proposed
Verification Status	absent
Contract Version	v1
Governance Fence	AuthorityEffect: None (certified_implies_authorized: false)

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2. Visual Architecture & Normalization Diagram

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3. Concrete Worked Example & Mechanism

Visual Transition Summary

Stage	Carrier / Operator	Concrete State / Invariant
1. Before / Candidate Input	Input Carrier (ObsNF Candidate)	Anomaly risk: observer overreach
2. Normalization / Gate	ObsNF Verification Gate	every_claim_declares_by_whom (certified_implies_authorized: false)
3. After / Certified Output	Certified ObsNF Output	Invariant: ['observer_id', ; 'measurement_context', ; 'equivalence_relation',...

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4. The Four-Pillar Quadrilateral & Non-Claims

Every contract in simplex-normal-forms is evaluated against the Four-Pillar Quadrilateral defined in contracts/_golden_nfs/standard.yaml:

Pillar	Requirement	Contract Specification for nf.epistemic.observer
Pillar I: Excludes Anomaly	Name and eliminate a specific class of data or state defects.	observer overreach
Pillar II: Preserves Invariant	State the structural invariant and protected skeleton preserved across transitions.	Invariant: every_claim_declares_by_whom Protected Skeleton: ['observer_id', 'measurement_context', 'equivalence_relation', 'visibility_boundary', 'comparison_envelope', 'challenge_terminal']
Pillar III: Lossless Reconstruction	State the non-loss reconstruction operator (join, direct sum, pullback, or replay).	Lossless reconstruction under declared projection, direct sum, or pullback operators.
Pillar IV: Syntactic Decidability	State how conformance is decided from declared constraints without unbudgeted scans.	Decidable from declared schema and witness metadata within bounded evaluation budgets.

Explicit Non-Claims (certified_implies_authorized: false)

• does not claim observer-independent global sameness

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5. Operational Verification & Terminal Routing

5.1 Required Declarations

• observer_id
• measurement_context
• equivalence_relation
• visibility_boundary
• comparison_envelope
• challenge_terminal

5.2 Required Evidence

• observer_packet
• measurement_trace
• comparison_witness_when_crossing_observers

5.3 Validation Criteria

Criterion ID	Name	Condition
criterion	Check	every_claim_declares_by_whom
criterion	Check	cross_observer_sameness_requires_comparison_witness
criterion	Check	missing_visibility_boundary_terminalizes

5.4 Terminal Route Map

Every evaluation terminates in a declared local route mapped to a canonical terminal in standard.yaml:

Local Terminal Route	Canonical Terminal
Preserve	Preserve
Lift	Lift
Escalate	Escalate
Quarantine	Quarantine
Decompose	Decompose
Refuse	Refuse
Abstain	Abstain

5.5 Declared Failure Modes

All defects route explicitly through the Terminal Route Map above.

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6. Epistemic Claim Hygiene Quadrant

In accordance with the repository's epistemic claim discipline:

1. What it supports:
   • Supports syntactic and operational checking of nf.epistemic.observer (ObsNF) against its declared schema, boundary constraints, and witness obligations in this model.
   • Supports deterministic terminal routing (Preserve, Lift, Escalate, Quarantine) when required declarations or invariants fail.
2. What it does not support:
   • Does not confer operational authority (AuthorityEffect: None, certified_implies_authorized: false).
   • Does not claim semantic truth of undeclared external processes or unverified upstream inputs beyond the declaredprotected skeleton.
3. The narrowest defensible claim:
   • Within the declared substrate at_rest, this contract enforces that observer overreach is either excluded under every_claim_declares_by_whom or routed to an explicit refusal/recovery terminal.
4. The next test needed:
   • Property-based falsification and mutation testing across boundary edge cases and composed multi-step pipelines for nf.epistemic.observer.

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7. Canonical YAML Contract (contracts/nf.epistemic.observer.yaml)

Click to expand full canonical YAML contract (contracts/nf.epistemic.observer.yaml)

schema_version: smplx.nf.contract.v0
contract_kind: normal_form_contract
identity:
  id: nf.epistemic.observer
  name: Observer Normal Form
  short_name: ObsNF
  version: v1
  status: draft
  family: epistemic
  theory_status: proposed
  contract_status: draft
  verification_status: absent
classification:
  hierarchy_level: normal_form
  subject_kind:
  - observer_relative_claim
  data_posture: at_rest
  mathematical_posture: operational
purpose:
  excludes_anomaly: observer overreach
  preserves_invariant: every_claim_declares_by_whom
  protected_skeleton:
  - observer_id
  - measurement_context
  - equivalence_relation
  - visibility_boundary
  - comparison_envelope
  - challenge_terminal
  erased_structure: []
  non_claims:
  - does not claim observer-independent global sameness
declarations_required:
- observer_id
- measurement_context
- equivalence_relation
- visibility_boundary
- comparison_envelope
- challenge_terminal
evidence_required:
- observer_packet
- measurement_trace
- comparison_witness_when_crossing_observers
validation_criteria:
- every_claim_declares_by_whom
- cross_observer_sameness_requires_comparison_witness
- missing_visibility_boundary_terminalizes
terminal_routes:
- Preserve
- Lift
- Escalate
- Quarantine
- Decompose
- Refuse
- Abstain
certification:
  certificate_required: true
  certificate_kind: observer_claim_certificate
  obstruction_class_required: false
  loss_ledger_required: false
  verifier_required: false
terminal_route_map:
  Preserve: Preserve
  Lift: Lift
  Escalate: Escalate
  Quarantine: Quarantine
  Decompose: Decompose
  Refuse: Refuse
  Abstain: Abstain
authorization:
  authorized_by: null
  certified_implies_authorized: false
definition:
  source: coda_all_universe/mssn_sn_tower/definitions.md
  formal_statement: observer overreach. every_claim_declares_by_whom
  quadrilateral:
    qualifies_as_true_normal_form: false
    qualification_gap: reconstruction_is_not_a_relational_project_join
    anomaly_exclusion: observer overreach
    lossless_join:
      status: declared_reconstruction
      statement: every_claim_declares_by_whom
    dependency_preservation:
      status: declared_with_the_invariant
      statement: The preserved invariant stays on the declared schema. This form does
        not state a functional-dependency projection of a flat relvar decomposition.
    syntactic_decision:
      status: declaration_decidable
      statement: The check reads the declared constraints and validation criteria.
        One unrecorded runtime image is not the decider.
schema_ref: ./normal_form_contract_schema.yaml