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Public Epistemic Handoff Integrity

A Source-Gated Audit Architecture for Scientific Claims in Public Representation

Abstract

Scientific claims routinely move from specialist communities into institutional summaries, journalism, educational materials, and other public representations. Such movement necessarily compresses evidence, method, uncertainty, and inferential structure, but compression alone is not an epistemic defect. This article proposes Public Epistemic Handoff Integrity (PEHI) as a source-gated audit architecture for a restricted class of mature science-to-public transitions. PEHI first requires independent evidence that a bounded scientific claim is operative within a specified specialist community and an analytically traceable source-to-public relation. It then compares source-side and representation-side inferential commitments across claim type, uncertainty, scope, boundaries, added premises, communicated justification, and provenance. Where a public proposition introduces a materially stronger target, the audit reconstructs the bridge and warrant supporting that transition and asks whether the material change remains recoverable from the representation and its traceable source relation, while prohibiting unsupported inference about actual recipient uptake. The framework is stress-tested on climate attribution and Helicobacter pylori as strict core cases, a mediated processed-meat/IARC reporting episode as a material-transformation stress test, and Stephen Hawking's The Grand Design as a boundary-exclusion case. The analysis distinguishes legitimate compression from rhetorical intensification, material transformation, and unsupported inferential expansion. It does not claim a new theory of scientific testimony, appropriate simplification, consensus reporting, or source comparison, nor unique diagnostic power. Its proposed contribution is methodological integration and sequencing: a pre-specified audit procedure for determining which mature scientific handoffs enter analysis, how their transmission and stronger inferential bridges are reconstructed, and which conclusions the analyst is not licensed to draw.

Keywords: science communication; scientific testimony; epistemic integrity; scientific authority; expert consensus; source traceability; inferential transformation; public representation.

1. Introduction — The Problem After Scientific Acceptance

Scientific claims do not remain within the specialist communities that establish, contest, refine, and use them. Claims that become sufficiently established to organize research, clinical practice, technical interpretation, or disciplinary instruction may subsequently enter institutional summaries, expert interviews, textbooks, journalism, museums, documentaries, and other forms of public scientific representation. This movement is indispensable. A society in which scientifically warranted claims could not move beyond specialist communities would be unable to sustain scientific education, public knowledge, or an effective division of epistemic labor.

Movement across that boundary nevertheless changes the epistemic situation. Specialist communities may possess evidential, methodological, and inferential resources that non-specialist recipients neither possess nor could reasonably be expected to reconstruct. Public representations therefore compress. They omit methodological detail, formal derivation, calibration procedures, alternative models, inferential steps, uncertainty structures, and portions of the evidential record.

Such compression is not itself an epistemic defect.

The foundational literature on epistemic dependence already makes clear that modern knowledge cannot require each knower to reconstruct all relevant evidence personally. Hardwig's account of epistemic dependence, Goldman's analysis of novice evaluation of expertise, Anderson's account of lay assessment of scientific testimony, and later work on warranted public trust reject epistemic self-sufficiency as a realistic model of complex knowledge societies (Hardwig 1985Goldman 2001Anderson 2011Irzik and Kurtulmuş 2019). Barimah further argues that second-order assessment itself imposes significant burdens on laypersons and that communicators must bear part of the epistemic burden of science communication (Barimah 2024).

Gerken develops the problem directly through the epistemology of scientific testimony. Scientific testimony, on his account, is properly based on scientific justification, and public scientific testimony can function as a central epistemic authority outside science. His analysis distinguishes scientific expert testimony from science reporting, formulates Non-Inheritance of Scientific Justification, and develops Justification Reporting as a norm according to which science reporters should, when feasible, communicate appropriate aspects of the nature and strength of the scientific justification supporting a reported claim (Gerken 2022).

More recent work narrows the remaining conceptual space. Gelfert and Schneider argue that Justification Reporting necessarily requires simplification and that determining when simplification becomes epistemically misleading is itself a substantial problem. Gerken's response accepts that proper simplification is difficult and emphasizes its dependence on context, audience, and platform (Gelfert and Schneider 2025Gerken 2026). Pils separately argues that science reporting should track the actual epistemic configuration of expert agreement and disagreement rather than silently impose stronger interpretations than the expert landscape warrants (Pils 2025).

Accordingly, the present article does not propose a new theory of scientific testimony, epistemic dependence, consensus reporting, science reporting, appropriate simplification, or public trust. Nor does it claim that existing approaches are incapable of identifying the transformations examined here.

Its object is narrower.

A scientifically established proposition can enter public representation through a traceable transmission while changing in ways not reducible to the amount of scientific justification communicated. Its causal force may change while substantial evidence is still reported. Its scope may expand while its source remains accurately cited. A category describing the strength of evidence for carcinogenicity may be represented as though it measured the magnitude of risk. Conversely, a public formulation may be dramatically simpler and rhetorically stronger than its specialist source while preserving the proposition's relevant inferential boundaries.

The analytical question is therefore:

How should an independently operative scientific claim and a traceably related public representation be reconstructed and compared so that legitimate compression, materially inferential transformation, and bridge-dominant extrapolation can be distinguished without inferring actual recipient uptake?

The proposed architecture begins with two eligibility conditions:

Op_{\mathcal C}(q_S)

and

Trace_A(q_S,r_P),

where (q_S) is a bounded scientific source claim, (Op_{\mathcal C}(q_S)) indicates that the claim's operative status has been established independently within a specified specialist community (\mathcal C), (r_P) is a specified public representation, and (Trace_A) denotes an analytically defensible source-to-representation relation.

Only after those conditions are met is the public epistemic handoff reconstructed:

q_S \xrightarrow{H_P} r_P.

Public Epistemic Handoff Integrity (PEHI) is the source-gated audit architecture proposed for that reconstruction.

The term integrity names the relation being audited; the proposed contribution is the audit architecture, not the discovery of a previously unidentified epistemic property.

Its governing proposition is:

\boxed{Public\ Epistemic\ Integrity \neq Literal\ Fidelity.}

A representation may legitimately simplify, compress, rephrase, reorganize, and omit much of the scientific justification available at the source. PEHI instead asks whether materially relevant transformations in the public claim and its presented epistemic basis remain sufficiently explicit or reconstructable that the representation does not acquire inferential force unsupported by the operative scientific source.

The proposed increment is correspondingly modest. It is methodological integration and sequencing: mature-source eligibility is established before representation analysis; a traceable claim-specific handoff is required; representation-unit-specific changes are subjected to an explicit inferential-difference test; analyst-visible traceability is separated from audience-visible provenance; communicated scientific justification is separated from observable authority cues; representation analysis is prevented from silently becoming recipient psychology; and bridge-dominant extrapolations are excluded from ordinary science-to-public handoffs.

No individual operation is claimed as novel.

2. From Scientific Correction to a Source-Gated Public Handoff

2.1 Conceptual continuity without formal dependence

The present analysis begins immediately downstream of scientific correction.

A companion RATIUM.AI analysis distinguishes a scientific operative state within a specified scientific community from later public deployment and institutional decision. Its central boundary is that scientific correction and downstream public or institutional transitions involve different actors, authority structures, premises, and empirical literatures and therefore should not be treated as one undifferentiated correction process (RATIUM.AI 2026a).

The present article takes the first public transition beyond that boundary as its object.

It does not import the companion article's state architecture as a formal premise. The relevant condition here is simpler: a bounded scientific claim has attained an independently supportable operative status within an independently specifiable specialist community:

Op_{\mathcal C}(q_S).

This makes the present architecture formally self-contained.

PEHI is nevertheless conceptually downstream of the earlier Corrective Handoff Integrity problem. Both architectures ask whether epistemically material status changes remain inspectable through a transition. The continuity is conceptual rather than formal. Public representation introduces a distinct source-status gate, audience-facing provenance, presented acceptance cues, representation-unit structure, and a recipient boundary that are not components of the scientific-correction architecture. PEHI therefore does not inherit the earlier state sequence; it begins where that sequence deliberately stops (RATIUM.AI 2026a).

2.2 Operative status is not final truth

The expression (Op_{\mathcal C}(q_S)) does not mean

q_S = True

in a final or incorrigible sense.

Nor does it mean unanimity, universal agreement, or permanent closure. It identifies a historically bounded condition in which a proposition has acquired sufficient specialist standing to function as an operative scientific commitment in the relevant community.

Thus:

Operative\ Status \neq Truth,

Operative\ Status \neq Unanimity,

and

Operative\ Status \neq Irreversibility.

The article is about what happens when a claim with that status is publicly represented, not about whether the community will ultimately prove correct.

2.3 Scientific justification is not sufficient for source eligibility

Not every scientifically respectable proposition qualifies.

A newly published result may be scientifically justified without yet being operative across a relevant specialist community. A prominent scientist's public statement may possess substantial authority without being a community-operative scientific claim. A prize, press release, public controversy, or later historical success cannot retroactively establish the source status required by the model.

Therefore:

Scientific\ Justification \not\Rightarrow Operative\ Community\ Status.

This restriction makes PEHI narrower than Gerken's general category of public scientific testimony, which can include testimony appropriately based on scientific justification without the additional requirement of prior community-operativity (Gerken 2022).

2.4 Source-Status Memo

Before a core public representation is coded, the source claim receives a Source-Status Memo:

SSM(q_S)=(q_S,\mathcal C,E_{op},t_{op}),

recording the exact or narrowest defensible source proposition, the relevant specialist community, the evidence supporting operative status, and the latest defensible date by which that status was established.

Core admission in the present study requires at least two non-redundant forms of source-status evidence. Depending on domain, these may include specialist syntheses, professional guidelines, routine dependence on the proposition in specialist practice, convergent disciplinary assessments, textbook or training incorporation, or explicit evidence of expert consensus or stable professional uptake.

This two-source-type requirement is a methodological safeguard for the present audit, not a proposed universal definition of scientific consensus.

Most importantly:

Public\ Prominence \not\Rightarrow Op_{\mathcal C}(q_S)

and

Later\ Vindication \not\Rightarrow Earlier\ Op_{\mathcal C}(q_S).

3. Prior Art and the Residual Contribution

3.1 Epistemic dependence, expertise, and public trust

PEHI begins from, rather than disputes, the legitimacy of epistemic dependence. Hardwig (1985) identifies the structural dependence of modern knowledge on the epistemic work of others. Goldman (2001) asks how non-experts can assess competing expert claims. Anderson (2011) develops second-order criteria for lay assessment of scientific testimony. Irzik and Kurtulmuş (2019) analyze conditions of warranted epistemic public trust in science. Barimah (2024) emphasizes that lay second-order assessment is itself difficult and that scientific communicators must share the resulting epistemic burden.

PEHI does not add a competing theory of public trust or expert dependence.

3.2 Gerken: the nearest foundational predecessor

Gerken provides the strongest local predecessor. Scientific Testimony characterizes scientific testimony through its proper basis in scientific justification, distinguishes scientific expert testimony from science reporting, and analyzes both intra-scientific and public scientific testimony (Gerken 2022).

Two parts are especially important here. First, Non-Inheritance of Scientific Justification rejects the assumption that a successful testimonial exchange normally transfers to the recipient the same kind or degree of scientific justification possessed at the source. Second, Justification Reporting proposes that science reporters should, where feasible, report appropriate aspects of the nature and strength of the scientific justification supporting a reported scientific hypothesis.

PEHI therefore does not claim novelty for distinguishing scientific justification from source prestige, for analyzing science reporting as public scientific testimony, or for asking whether scientific justification has been appropriately represented.

3.3 Appropriate simplification

Gelfert and Schneider (2025) make the collision closer. Justification Reporting necessarily involves simplification, and the assumption that such simplification can routinely remain appropriate requires defense. Misleading framing or oversimplification can change the epistemic character of public reporting even where the communicator is acting in good faith.

Gerken (2026) responds that proper simplification is difficult but tractable and that it must be sensitive to context, audience, and platform.

Accordingly, appropriate simplification is not a PEHI novelty claim, and neither is the observation that a headline, lead, and body can differ epistemically.

3.4 Consensus-sensitive reporting

Pils (2025) argues that science reporting should represent the epistemic configuration of relevant expert communities, including where consensus exists, where it does not, and how strong agreement or disagreement is.

PEHI therefore cannot claim novelty for the proposition that public reporting should track expert epistemic conditions. The source-status gate performs a different role: it determines whether a bounded proposition qualifies for the target source class before its public representation is audited.

3.5 Knowledge in transit

The movement and translation of scientific knowledge across contexts are established research objects. Secord (2004) explicitly proposes treating science as communication and emphasizes movement, translation, and transmission. Star and Griesemer (1989) show how heterogeneous communities coordinate through translation and boundary objects without requiring conceptual identity.

Thus, the proposition that knowledge changes in transit is not a PEHI contribution.

The same limitation applies within the broader RATIUM.AI corpus. Related work already distinguishes scientific warrant from scientific authority, treats cross-domain handoffs and added premises as auditable objects, and emphasizes that the authority of a source cannot silently substitute for target-domain warrant (RATIUM.AI 2026b). PEHI does not introduce a new general theory of claim travel, authority migration, or generic transformation records.

3.6 Empirical source-to-report comparison

Operational comparison of scientific sources and public reporting is also not new. Sumner et al. (2014) compare peer-reviewed biomedical articles, academic press releases, and news reports and code transformations such as correlational findings represented causally, non-human findings generalized to humans, and research findings converted into behavioral advice.

This demonstrates that at least some changes in claim type, scope, and implication can be operationalized rather than diagnosed impressionistically. PEHI treats such work as methodological precedent.

3.7 PEHI versus Justification Reporting

The strongest redundancy objection is:

PEHI = Justification\ Reporting + Source\ Comparison.

If that equation captures all of PEHI's work, the architecture should be abandoned.

The relevant distinction is not that PEHI can discover errors inaccessible to Gerken's framework. It cannot claim that.

Justification Reporting is principally a communication norm: what should science reporters communicate about scientific justification?

PEHI is a pre-specified audit sequence for a restricted source class: which mature scientific source-to-public episodes enter analysis, how source relations are reconstructed, which dimensions are compared, and which inferences the analyst is prohibited from drawing.

The amount of communicated scientific justification does not determine the materiality diagnosis. Sparse (J_P) does not by itself establish a material transformation, and rich (J_P) does not exclude one.

A short statement may communicate little scientific justification while preserving the source proposition's material inferential boundaries; a detailed representation may communicate substantial evidence while expanding scope, changing claim type, or adding an unsupported bridge.

3.8 Residual contribution

The maximum-defensible contribution is therefore:

PEHI is a source-gated audit architecture that independently establishes the operative status of a bounded scientific claim, requires an analytically traceable source-to-public relation, reconstructs representation-unit-specific material changes through an inferential-difference test, requires the audit of materially stronger targets to identify their bridge and warrant, tests whether material transitions remain reconstructable from the representational record, distinguishes communicated scientific justification from audience-facing provenance and observable acceptance cues, explicitly separates representation analysis from claims about actual recipient uptake, and excludes bridge-dominant extrapolations from ordinary science-to-public handoffs.

No individual component is claimed as novel. The bridge/warrant language and the recoverability terminology are used procedurally rather than as claims to a new theory of argumentation, transparency, or message reconstruction. The RATIUM.AI sources cited for conceptual lineage establish construct provenance and architectural continuity; they are not treated as independent external validation.

Across the literatures examined, these functions are substantially represented but distributed. The proposed increment is their organization and sequencing around a specified operative source, traceable public handoff, and specified public representation as a restricted unit of audit.

4. Object and Scope

4.1 Source claim

The source object is:

q_S.

It must be stated propositionally and as narrowly as the scientific record permits. “Climate science,” “evolution,” “modern medicine,” or “what scientists know” are not valid source objects.

This discipline matters because scientific authority may attach to a field, institution, theory, or expert while evidential warrant remains claim-specific.

4.2 Public representation

The receiving object is:

r_P.

It may be an institutional public summary, science-journalism article, public expert statement, educational text, press release, documentary statement, museum representation, or another artifact presenting a claim as scientifically grounded.

An artifact need not be epistemically homogeneous. Accordingly:

r_P= \{r_{headline},r_{lead},r_{body},r_{caption},r_{callout},r_{graphic},r_{interface},\ldots\}.

These are Representation Units. A Representation Unit need not be textual. It may be textual, visual, graphical, interface-based, or mixed. Medium is not treated as an independent PEHI integrity dimension, and the audit does not infer a medium's psychological effect on recipients. The relevant question is whether the specified unit itself presents a materially different claim type, uncertainty structure, scope, boundary, justificatory status, or added premise (RATIUM.AI 2026e).

A transformation identified in one unit is not automatically attributed to the artifact as a whole:

Unit\text{-}Level\ Transformation \neq Artifact\text{-}Level\ Transformation.

A broad headline followed by a precise qualification is analytically different from a broad headline whose expansion remains operative throughout the body.

4.3 Analytical Traceability

To enter PEHI analysis:

Trace_A(q_S,r_P)

must be satisfied.

Analytical Traceability means that the analyst possesses sufficient evidence of a documented source relation or identifiable carrier connecting the selected scientific source environment to the public representation. Direct citation, named sourcing, an official derivative document, an attributed interview, explicit reliance on a specialist synthesis, a documented institutional publication chain, or another identifiable transmission record may satisfy this requirement.

The relation may be direct or mediated:

q_S\rightarrow r_P

or:

q_S\rightarrow r_I\rightarrow r_P.

Chronological compatibility, semantic resemblance, shared subject matter, or the general prestige of a scientific field does not by itself establish Analytical Traceability (RATIUM.AI 2026cRATIUM.AI 2026f).

The existence of semantically similar propositions is insufficient:

Similarity(q_S,r_P)\not\Rightarrow Trace_A(q_S,r_P).

4.4 Audience-facing provenance

Analytical traceability must be separated from:

Prov_P.

Audience-Facing Provenance asks what source relationship is visible to the recipient.

An analyst may reconstruct a source chain that is almost invisible in the public artifact. Conversely, an artifact may prominently cite a prestigious institution without rendering the relevant source proposition or its limits reconstructable.

Therefore:

Trace_A\neq Prov_P.

(Trace_A) is an eligibility condition. (Prov_P) is a coding field.

4.5 Presented Acceptance Basis

The metadata field:

PAB_P

denotes the Presented Acceptance Basis: observable cues that the artifact visibly offers in support of acceptance or deference.

These may include a named expert, institutional authority, scientific consensus, description of evidence, source citation, prize or status marker, or combinations of these.

PEHI does not infer that a reader actually trusted a claim because a prestigious institution appeared in the text. It may record only that the institution was foregrounded as an acceptance cue.

Accordingly, (PAB_P) is metadata rather than an independent integrity score.

4.6 Recipient boundary

Let:

E_R^{\mathcal R}

denote actual recipient epistemic status for recipient class (\mathcal R).

Then:

r_P\not\Rightarrow E_R^{\mathcal R}.

A public artifact alone does not establish what its audience believed, understood, inferred, remembered, rejected, or misunderstood. Claims about uptake require independent evidence.

PEHI therefore analyzes the representation and the epistemic basis it makes available, not actual audience psychology.

4.7 Claim-environment rule

Analytical traceability across the same source, carrier, author, institution, or artifact does not preserve epistemic authorization when the target proposition changes explanatory environment. A move from scientific description or mechanism to a stronger causal, ontological, metaphysical, normative, or action-guiding proposition must be treated as a target change. The audit must then identify the corresponding changes in claim type, scope, boundary, and added premises rather than allowing common authorship or source authority to carry warrant across the transition (RATIUM.AI 2026eRATIUM.AI 2026f).

Thus:

Same\ Carrier\not\Rightarrow Same\ Epistemic\ Authorization.

PEHI may identify that a public representation has crossed into an action-guiding claim environment, but it does not assess whether the resulting action is institutionally authorized, implemented, contestable, correctable, or reversible. Those are downstream governance questions.

4.8 Excluded objects

The core architecture excludes:

  • reporting on newly published studies where (Op_{\mathcal C}(q_S)) cannot yet be established;

  • policy recommendation and evidence-to-decision conversion;

  • administrative implementation;

  • political mobilization;

  • generic misinformation as a target class;

  • trust-in-science outcomes;

  • persuasion and recipient psychology.

It also excludes bridge-dominant extrapolation:

Scientific\ Resource + Substantial\ Philosophical/Normative\ Bridge \rightarrow Broader\ Claim.

Where the bridge rather than the scientific proposition performs the principal inferential work, the episode is not an ordinary PEHI core handoff.

5. Public Epistemic Handoff Integrity

5.1 Canonical definition

Public Epistemic Handoff Integrity (PEHI) is a source-gated audit architecture for reconstructing traceable transitions from scientific claims independently established as operative within specified specialist communities to specified public representations. It does not require literal fidelity, comprehensive transmission of scientific justification, or inference about actual audience uptake. It compares source-side and representation-side inferential commitments in order to distinguish legitimate compression from materially consequential transformation, while preserving explicit boundaries among scientific warrant, communicated justification, public provenance, observable authority cues, and recipient response.

The term integrity names the relation being audited. The contribution is the audit architecture.

5.2 Integrity is not informational preservation

The following implication is rejected:

More\ Information\Rightarrow Greater\ Integrity.

A technically detailed public account may still expand scope or add an unsupported conclusion.

Likewise:

Less\ Information\Rightarrow Lower\ Integrity

is rejected. A single sentence may legitimately summarize a large scientific synthesis.

Thus:

\boxed{Integrity\neq Information\ Volume.}

5.3 Integrity is not literal fidelity

Public translation normally changes vocabulary, density, syntax, granularity, examples, and explanatory form.

Therefore:

\boxed{Integrity\neq Semantic\ Immobility.}

This keeps PEHI compatible with the literature on necessary and context-sensitive simplification rather than treating public accessibility as a defect (Gelfert and Schneider 2025Gerken 2026).

5.4 Source and public justification

Let:

J_S

denote the scientific justification available at the source and:

J_P

the relevant nature or strength of that justification communicated by (r_P).

Normally:

J_P<J_S

in informational richness.

That inequality is not a failure condition. The recipient need not become a specialist, and the public artifact need not reproduce the source community's scientific record.

5.5 Scientific content and distributed scientific authority

The epistemic content of a scientific claim and the socially distributed authority attached to its scientific source are analytically non-identical:

S_c\neq S_a,

where (S_c) denotes scientific content and (S_a) denotes socially distributed scientific authority. A bounded scientific result may acquire broad public standing because science, a scientific institution, or a prominent expert is regarded as reliable, objective, or authoritative. Such authority may legitimately function as provenance, evidence of specialist standing, or an observable basis for public deference. It does not by itself warrant an expanded scope, stronger claim type, added premise, or changed explanatory target (RATIUM.AI 2026f).

PEHI therefore records presented acceptance cues without allowing them to compensate for an unsupported inferential transition. The notation is schematic and does not treat (PAB_P) or distributed authority as scalar quantities:

PAB_P\not\Rightarrow Warrant(P_P).

5.6 Inferential-Difference Test

Materiality is assessed through an explicit adversarial procedure.

Let:

P_S

be the strongest proposition defensibly attributable to the source environment in the relevant context, and:

P_P

the strongest proposition defensibly expressed by the relevant public Representation Unit.

A transformation is epistemically material when:

\boxed{ InferentialCommitments(P_S) \neq InferentialCommitments(P_P) }

with respect to at least one relevant dimension.

The principal dimensions are:

\{T,U,S,B,AP\},

where:

  • (T) = claim type;

  • (U) = uncertainty or confidence structure;

  • (S) = scope or applicability;

  • (B) = substantive boundary;

  • (AP) = added premise or conclusion.

Examples of prima facie material changes include:

Association\rightarrow Causation,

Animal\ Finding\rightarrow Human\ Claim,

90\%\rightarrow All,

or:

Evidence\text{-}Strength\ Classification \rightarrow Risk\text{-}Magnitude\ Claim.

By contrast, stronger rhetoric, shorter phrasing, metaphor, stylistic simplification, or omission of inferentially irrelevant detail does not pass the test merely because the language changed.

Before coding a difference as material, the analyst must state and test the strongest plausible non-material interpretation.

5.7 Material transformation is not automatically integrity failure

Even:

Material(\Delta)=Yes

does not by itself establish a defective handoff.

A public representation may explicitly mark an additional premise, scope shift, or inferential extension. A material transition may also remain reconstructable even where the public proposition is stronger than its source. The principal concern is therefore unsupported, insufficiently marked, or non-reconstructable inferential expansion, not transformation as such.

Thus:

Epistemic\ Transformation\neq Epistemic\ Failure.

6. Operationalization and Coding Protocol

6.1 Eligibility gates

Every proposed core episode passes two gates before representation analysis.

Gate 1 — Source status

Op_{\mathcal C}(q_S).

Gate 2 — Analytical traceability

Trace_A(q_S,r_P).

Failure of either gate yields:

Not\ a\ Core\ Handoff.

No integrity failure follows merely from exclusion.

6.2 Public Handoff Record

For an eligible episode, the record contains:

Field
Operational question
Source claim
What is the narrowest defensible q_S?
Source-Status Memo
What independently establishes Op_{\mathcal C}(q_S), and by what date?
Analytical Traceability
What establishes the source-to-representation relation?
Representation Unit
Headline, lead, body, caption, callout, graphic, interface element, mixed unit, or whole artifact?
Recipient class
What non-specialist audience is explicitly or functionally addressed?
Claim type T
What type of proposition is expressed, and did it change?
Uncertainty U
What confidence or uncertainty structure is materially altered?
Scope S
Has population, condition, object, applicability, or generality changed?
Boundary B
What relevant limit or exception is preserved, lost, or introduced?
Added premise AP
What proposition is required for P_P but not supplied by P_S?
Communicated justification J_P
What features of the source justification are publicly represented?
Audience-facing provenance Prov_P
What source relation is visible to the audience?
Presented Acceptance Basis PAB_P
What observable authority or deference cues are foregrounded?
Stronger-target bridge — conditional
If P_P requires a stronger inferential target than P_S, what bridge proposition connects them and what warrant supports it?
Recoverability — conditional
If a material transformation is identified, can its source boundary, added premise, claim-type change, and supporting warrant be reconstructed from the representation and analytically traceable source relation?

The two conditional rows are audit annotations, not additional PEHI dimensions or score components. They make explicit two questions already implicit in target and added-premise discipline: how a stronger proposition is licensed, and whether the material transition remains inspectable after public representation (RATIUM.AI 2026cRATIUM.AI 2026d).

No scalar index is assigned.

6.3 Transformation codes

For substantive dimensions, the descriptive codes are:

\{ Preserved,\ Narrowed,\ Expanded,\ Reclassified,\ Omitted,\ Added,\ Indeterminate \}.

They are not ordinal grades. A narrowing may be legitimate, and an omission may be epistemically immaterial.

6.4 Adversarial materiality procedure

For every disputed transformation:

  1. reconstruct (P_S);

  2. reconstruct (P_P);

  3. identify the dimension allegedly changed;

  4. state the inferential commitment available under each;

  5. determine whether the difference changes truth conditions, applicability, causal force, classification, or a licensed conclusion;

  6. state the strongest plausible interpretation under which no material difference exists;

  7. determine whether a material difference remains and record (Material(\Delta)=Yes), (No), or (Indeterminate);

  8. if a material public proposition introduces a stronger target, identify the bridge or added premise connecting (P_S) to (P_P), the warrant offered for that bridge, and the evidence or condition that would defeat or narrow it;

  9. where a material transformation remains, conduct the Recoverability Check;

  10. record the localized transformation diagnosis and, where applicable, its recoverability status before assigning any artifact-level interpretation.

The stronger-target subtest follows a general constraint: a weaker evidential category must not silently perform the work of a stronger explanatory category, and any such transition requires a bridge whose warrant and defeat conditions can be stated (RATIUM.AI 2026d). The procedure is intended to constrain, not eliminate, interpretive judgment.

Recoverability Check

After a material difference has been identified, the audit asks whether the source boundary, uncertainty, added premise, claim-type transition, and warrant supporting the stronger public proposition remain reconstructable from the representation and its analytically traceable source relation. Recoverability is a property of the representational record, not an inference about whether any actual recipient performed the reconstruction (RATIUM.AI 2026c). Recoverability is also distinct from institutional correctability. It does not ask whether a criticism can alter a policy, workflow, authority allocation, permission state, or decision regime; it asks only whether the epistemically material transition remains reconstructable in the representation and its analytically traceable source relation.

Recoverability is recorded descriptively as:

\{Reconstructable,\ Partially\ Reconstructable,\ Not\ Reconstructable,\ Indeterminate\}.

Accordingly:

Material(\Delta)=Yes\not\Rightarrow Unrecoverable\ Transformation.

6.5 Representation-unit discipline

Where:

r_P=\{r_1,\ldots,r_n\},

material transformations may be coded locally.

Artifact-level interpretation must then state whether a material change introduced in one unit is repeated, qualified, corrected, contextualized, or left unrepaired elsewhere.

Thus:

Headline\ Expansion + Body\ Restoration

is analytically different from:

Headline\ Expansion + Body\ Expansion.

No claim is made about how many recipients reached or processed the body.

6.6 Methodological status

The coding protocol is a disciplined reconstruction procedure, not a validated measurement instrument and not a claim that ordinary source comparison cannot reach equivalent substantive judgments.

Its methodological purpose is to pre-specify case admission, comparison dimensions, materiality tests, and inferential boundaries before case outcomes are known.

The cases below are therefore purposive stress tests, not representative validation.

7. Core Case I — Human Influence on Climate Warming

7.1 Source-Status Memo

The first core case concerns:

q_C: Human\ influence\ has\ warmed\ the\ atmosphere,\ ocean,\ and\ land.

The relevant specialist community is the climate-science and Earth-system attribution community.

The operative status of the substantive human-attribution claim is independently supportable before the public artifacts examined here. The National Research Council concluded in 2010 that multiple lines of evidence support the attribution of most observed warming over recent decades to human activities (National Research Council 2010). In 2013, the American Geophysical Union stated that humanity was the major influence on observed global climate change over the preceding fifty years (American Geophysical Union 2013).

AR6 Working Group I then integrated the attribution across components of the climate system, stating that it is unequivocal that human influence has warmed the atmosphere, ocean, and land since pre-industrial times and grounding the conclusion in observations, model simulations, and physical understanding (Eyring et al. 2021).

Therefore:

Op_{\mathcal C_C}(q_C)=PASS.

The requirement is prior operativity of the substantive attribution, not prior verbatim identity with the exact AR6 sentence.

7.2 IPCC Summary for Policymakers

The AR6 Summary for Policymakers provides a direct source-to-public relation:

Trace_A(q_C,r_{SPM})=PASS.

Its headline finding reproduces the relevant attribution and explicitly identifies the scientific assessment as the basis of the summary (IPCC 2021).

For the relevant proposition:

P_S \approx P_P

and no material difference in claim type, uncertainty, scope, or boundary is established.

Dimension
Coding
T
Preserved
U
Preserved: “unequivocal”
S
Preserved
B
No material loss identified
AP
None material
J_P
Strongly compressed; basis signposted
Prov_P
Strong

The result is:

\boxed{IPCC\ SPM=Legitimate\ Compression.}

This case functions as a preservation stress test against the assumption that severe informational compression itself constitutes epistemic degradation.

7.3 Reuters: rhetorical broadening without established material transformation

Reuters' 9 August 2021 summary uses the heading “HUMANS ARE TO BLAME — FULL STOP” and states that the IPCC used its strongest language yet to say that humans are causing climate change. It immediately reproduces the IPCC formulation and quotes IPCC author Friederike Otto explaining why the attribution sentence carries no uncertainty qualifier (Januta 2021).

Analytical traceability is direct:

Trace_A(q_C,r_R)=PASS.

The opening language is rhetorically broader than the specialist sentence. But the strongest plausible non-material interpretation is that “humans are causing climate change” operates as journalistic shorthand for the human-attribution proposition specified immediately afterward.

The audit therefore does not establish altered truth conditions, causal force, or licensed conclusions.

Thus:

\boxed{Material(\Delta)=Not\ Established.}

and:

\boxed{ Reuters= Rhetorical\ Broadening + Immediate\ Scientific\ Reanchoring. }

The principal methodological burden of the case is false-positive resistance:

Rhetorical\ Intensification\neq Epistemic\ Inflation.

8. Core Case II — Helicobacter pylori and Peptic Ulcer Disease

8.1 Source-Status Memo

The second case tests the architecture in a biomedical clinical domain.

The bounded proposition is:

q_H: H.\ pylori\ is\ a\ major\ causal\ agent\ of\ peptic\ ulcer\ disease.

The relevant specialist community is gastroenterology and associated infectious-disease clinical research.

The source-status evidence substantially predates the 2005 public event used for representation analysis. The 1994 NIH Consensus Development Conference explicitly addressed the causal relation between H. pylori and upper gastrointestinal disease and the benefits of eradication in peptic-ulcer disease (NIH Consensus Development Conference 1994). In 1996, official American College of Gastroenterology practice guidelines, approved also by the American Gastroenterological Association and the American Society for Gastrointestinal Endoscopy, stated that antibiotic therapy was indicated for H. pylori-infected ulcer patients (Soll 1996). The 1997 Maastricht Consensus likewise recommended eradication therapy for all H. pylori-positive patients with peptic-ulcer disease (European Helicobacter Pylori Study Group 1997).

Therefore:

\boxed{Op_{\mathcal C_H}(q_H)=STRONG\ PASS.}

The Nobel Prize is not used to establish scientific acceptance.

8.2 Nobel public representation

The Nobel Assembly's 2005 public release offers an internally heterogeneous but traceable representation. Its summary broadly presents peptic-ulcer disease as resulting from H. pylori infection, while the body specifies that H. pylori causes more than 90% of duodenal ulcers and up to 80% of gastric ulcers and identifies several lines of supporting evidence (Nobel Assembly at Karolinska Institutet 2005).

The opening unit can therefore sound more universal than the artifact-level proposition:

Unit\text{-}Level\ Broad\ Shorthand + Artifact\text{-}Level\ Boundary\ Restoration.

At artifact level no unsupported universalization is established.

The result is:

\boxed{Nobel\ Representation=Legitimate\ Compression.}

8.3 Independent journalism

The pattern recurs in journalism.

The Guardian reports the discovery in broad causal terms while also reproducing the non-universal quantitative limits supplied by the Nobel Assembly (Ford 2005).

The Los Angeles Times opens by stating that stomach ulcers are caused by a bacterium rather than emotional stress or spicy foods, but later reports the high-but-non-universal percentages and explicitly identifies the remaining cases as primarily associated with aspirin and similar drugs (Maugh 2005).

Accordingly, the strongest artifact-level interpretation does not support:

All\ ulcers\ are\ caused\ by\ H.\ pylori.

The apparent broadening is bounded within the artifact.

Thus:

\boxed{Material(\Delta)=Not\ Established}

at artifact level.

8.4 Function of the case

The H. pylori case is not a second demonstration of public distortion.

Its principal function is:

\boxed{ Cross\text{-}Domain\ Portability + False\text{-}Positive\ Resistance. }

The same source-status gate, traceability requirement, Representation-Unit Rule, and Inferential-Difference Test can be applied in a clinical causal domain without changing the protocol.

This is a limited stress-test result, not validation of general domain independence.

9. Mediated Positive Stress Test — From Processed-Meat Evidence to Smoking-Equivalent Risk

9.1 A mediated source environment

The third case supplies a positive material-transformation stress test, but it is not counted as a strict core handoff under the simplest form of the source gate. Its source structure is more complex than the preceding cases: mature risk evidence predates the public episode, while the IARC classification that supplies the decisive classificatory boundary is contemporaneous with the reporting event.

It is important not to collapse two different source-side objects.

Before the October 2015 IARC announcement, major expert review already treated processed-meat consumption as strongly supported evidence of increased colorectal-cancer risk. The 2007 World Cancer Research Fund/American Institute for Cancer Research Second Expert Report judged the evidence linking processed meat to increased colorectal-cancer risk to be convincing (World Cancer Research Fund/American Institute for Cancer Research 2007). The World Cancer Research Fund's pre-announcement summary later described its existing recommendation as based on expert evaluation and its Continuous Update Project as finding strong evidence that processed meat increases bowel-cancer risk, with an estimated relative risk of approximately 1.18 per additional 50 g/day (Thompson 2015). A 2011 meta-analysis independently summarized the 2007 judgment as convincing and found a statistically significant increased colorectal-cancer risk associated with processed-meat intake (Chan et al. 2011).

Define this mature source content conservatively as:

q_M: Processed\text{-}meat\ consumption \ is\ supported\ by\ strong\ expert\ evidence \ as\ increasing\ colorectal\text{-}cancer\ risk.

Thus:

Op_{\mathcal C_M}(q_M)=PASS.

The 2015 IARC classification is a distinct contemporaneous carrier:

c_I: Processed\ meat\in IARC\ Group\ 1.

IARC classified processed meat as carcinogenic to humans on the basis of sufficient evidence that eating processed meat causes colorectal cancer. Crucially, WHO/IARC explicitly stated that processed meat's membership in the same Group 1 category as tobacco smoking and asbestos does not mean that they are equally dangerous. The classification describes the strength of scientific evidence that an agent causes cancer rather than the magnitude of risk (World Health Organization 2015).

The case is therefore reconstructed as a mediated source chain:

q_M\rightarrow c_I\rightarrow r_{Std},

rather than by falsely identifying (q_M) with the newly issued Group 1 label.

9.2 The public representation

The relevant Standard article is explicitly based on the WHO/IARC report and classification. Its headline states that processed meats are “as bad as smoking,” while the lead states that they “pose as big a cancer threat as cigarettes.” The article also reports the Group 1 classification, the approximately 18% increase in colorectal-cancer risk associated with 50 g/day, and the IARC statement that individual risk remains small (Connor 2015).

Analytical traceability is therefore strong:

Trace_A(q_M\rightarrow c_I\rightarrow r_{Std})=PASS.

9.3 Inferential-Difference Test

The source-side classificatory commitment is:

P_S: Shared\ Group\ 1\ membership \Rightarrow sufficient/strong\ evidence\ of\ carcinogenicity.

The source explicitly rejects:

Shared\ Group\ 1 \Rightarrow Equal\ danger.

The headline and lead instead introduce:

P_P: Risk(processed\ meat) \approx Risk(smoking).

Therefore:

InferentialCommitments(P_S) \neq InferentialCommitments(P_P).

The difference is not merely rhetorical. It adds a comparative-risk proposition not licensed by the classification.

Thus:

\boxed{Material(\Delta)=YES.}

The stronger-target bridge can be reconstructed as:

Shared\ Group1\ Membership \rightarrow Comparable\ Cancer\ Danger.

The relevant scientific source does not supply warrant for that bridge; it explicitly rejects the inference that common Group 1 membership implies equal danger. The source-side defeat condition is therefore already present in the same traceable environment:

Same\ Evidence\ Category \not\Rightarrow Same\ Risk\ Magnitude.

9.4 Coding

Dimension
Result
T
Reclassified: evidence/hazard classification → comparative-risk proposition
U
Not the principal transformation
S
Secondary
B
Lost/violated: same evidence category ≠ same danger
AP
Added: common Group 1 membership licenses comparable risk
J_P
Some quantitative information communicated
Prov_P
Strong
PAB_P
WHO/IARC authority strongly foregrounded
Stronger-target bridge
Shared Group 1 membership → comparable cancer danger
Bridge warrant
Not supplied by IARC; the source explicitly rejects equal-danger inference
Recoverability
Partially Reconstructable at artifact level

The transformation can be expressed as:

\boxed{ Evidence\text{-}Category\ Equivalence + Unsupported\ Bridge \rightarrow Risk\text{-}Magnitude\ Equivalence. }

9.5 Body-level qualification

The artifact is not a pure misinformation object. The body reports the 18% estimate and includes the IARC qualification that individual risk remains small.

Therefore:

r_{headline/lead}\neq r_{body}.

The appropriate diagnosis is:

\boxed{ Localized\ Material\ Comparative\text{-}Risk\ Expansion + Partial\ Artifact\text{-}Level\ Qualification. }

The Recoverability Check yields:

\boxed{Recoverability=Partially\ Reconstructable.}

The body provides the approximate 18% estimate and the qualification that individual risk remains small, so the source boundary can be partially reconstructed within the artifact. It does not, however, explicitly retract the smoking-equivalence proposition stated in the headline and lead. Recoverability therefore does not cancel materiality, and the architecture does not infer whether actual readers performed the reconstruction.

Independent risk-communication analysis later described the same underlying confusion between level of evidence and magnitude of risk and identified “as dangerous as smoking” interpretations as misleading risk representations (Zec et al. 2019). This convergence does not validate PEHI; it shows that the pre-specified Inferential-Difference Test reaches a result compatible with independent analysis.

9.6 Limitation of the case

The processed-meat episode is structurally less simple than the IPCC and H. pylori cases. The mature risk relation predates the public episode, while the classificatory carrier that makes the erroneous comparison salient is contemporaneous with it.

Accordingly, this case demonstrates a mediated extension of the PEHI audit procedure, not a strict core one-source/one-representation handoff. It supplies a positive test of the Inferential-Difference procedure under traceable mediation; it does not establish that material transformation has been demonstrated within the strict core case class.

9.7 Boundary rejection — Hawking and The Grand Design

The Hawking case tests a different boundary.

The Grand Design argues that cosmological explanation need not invoke a divine creator (Hawking and Mlodinow 2010). Contemporary discussion noted that the argument relied in part on M-theory, while Mlodinow explicitly denied that the authors had proved that God did not create the universe (Castelvecchi 2010). A Physics Today review described M-theory as a still incompletely specified framework in the context of a search for a theory of everything (Olinto 2011).

There is no defensible operative scientific source proposition:

q_S= Science\ has\ established\ that\ God\ is\ unnecessary.

A more accurate reconstruction is:

Scientific/Theoretical\ Resources + Substantive\ Philosophical\ Bridge \rightarrow Metaphysical\ Conclusion.

The relevant boundary is not hostility to theoretical extension but target discipline. A model-relative or theory-relative scientific limitation does not inherit authority over a stronger metaphysical or admissibility proposition merely because the same scientist, theory, or public representation carries the transition. Mechanism-level explanatory success and source-level or metaphysical resolution therefore remain non-equivalent targets (RATIUM.AI 2026g).

Thus:

\boxed{Hawking=Not\ a\ Core\ PEHI\ Handoff.}

The exclusion preserves a central boundary:

Scientific\ Expertise \neq Operative\ Scientific\ Status \ of\ Every\ Proposition \ Advanced\ by\ an\ Expert.

10. Cross-Case Results

10.1 The cases do not support a degradation model

The admitted cases do not exhibit a general decline in epistemic quality as scientific knowledge enters public representation.

The IPCC Summary for Policymakers compresses extensively while preserving the relevant attribution. Reuters intensifies rhetoric without a demonstrated material change in the proposition. The H. pylori artifacts use broad public shorthand while restoring relevant boundaries within the same artifacts.

The processed-meat case differs because the headline and lead add a comparative-risk commitment explicitly not licensed by the scientific classification.

The resulting distribution is:

Case
Principal result
IPCC → SPM
Legitimate compression
IPCC → Reuters
Rhetorical broadening; no material transformation established
H. pylori → public representations
Legitimate compression with boundary restoration
Processed meat → IARC carrier → The Standard
Mediated positive stress test: localized material inferential expansion with partial qualification and partial recoverability
Hawking
Not a core handoff

The architecture therefore does not support:

Public\ Translation\Rightarrow Epistemic\ Degradation.

It supports a three-way distinction:

\boxed{ Compression \neq Transformation \neq Unsupported\ Inferential\ Expansion. }

10.2 Information loss is not the governing variable

Large quantities of specialist information disappear in the positive cases, yet this loss does not track material integrity defects.

Thus:

Less(J_P)\not\Rightarrow Material(\Delta).

Conversely, the processed-meat article communicates scientifically relevant quantitative information while also asserting a comparative-risk proposition not licensed by the source classification.

Therefore:

More(J_P)\not\Rightarrow No\ Material(\Delta).

This result is consistent with Gerken's Non-Inheritance of Scientific Justification: public epistemic success does not require recipients to inherit the kind or degree of scientific justification possessed within the source community (Gerken 2022).

10.3 Representation-unit analysis matters, but is not novel

The H. pylori and processed-meat cases confirm that a headline, lead, and body may have different inferential properties.

But this is not an independently novel result of PEHI. Gelfert and Schneider (2025) and Gerken (2026) already make framing and context-sensitive simplification central problems.

PEHI's narrower role is to place Representation-Unit analysis after source eligibility and traceability have been fixed.

10.4 Source status changes case admission

The source-status gate performs work that generic accuracy analysis does not require.

A newly published study may be reported accurately or inaccurately, but it is outside the target class if the relevant proposition has not yet acquired independently supportable operative status.

This explains why PEHI does not simply adopt the journal-article → press-release → news chain used by Sumner et al. (2014). Their work remains highly relevant to transformation coding, but the source class is broader than the one defined here.

10.5 Recipient non-inference survives the cases

None of the case judgments requires:

r_P\Rightarrow Actual\ Audience\ Belief.

A headline may make an inference salient without demonstrating that recipients accept it. A later qualification may make correction available without demonstrating that recipients perform it.

PEHI therefore remains a representation-side audit unless independent uptake evidence is introduced.

10.6 Material transformation and recoverability

The processed-meat stress test introduces a distinction not required by the non-material cases. Detecting a materially different proposition and determining whether the transition remains reconstructable are separate analytical tasks. A public representation may contain a material inferential expansion while also preserving enough source-side information to make part of the expansion auditable from within the artifact or its traceable source relation.

Accordingly:

Material(\Delta)=Yes\not\Rightarrow Recoverability=Not\ Reconstructable.

This distinction does not infer successful correction by recipients. It identifies only whether the representational record preserves the bridge, boundary, or warrant sufficiently for analytical reconstruction.

11. Rival-Framework Recomparison and Defeat Test

11.1 Gerken

Gerken's framework already supplies much of the epistemological foundation: scientific testimony grounded in scientific justification, public scientific testimony as legitimate epistemic authority, Non-Inheritance of Scientific Justification, and Justification Reporting (Gerken 2022).

The processed-meat case does not demonstrate a phenomenon inaccessible to Gerken's approach. A Gerken-style analysis can object that the public representation misstates the implications of the scientific justification.

Therefore:

\boxed{PEHI\ has\ no\ unique\ claim\ on\ the\ diagnosis.}

The residual difference lies in audit sequencing:

Op_{\mathcal C}(q_S)+Trace_A

are fixed before representation analysis.

11.2 Gelfert–Schneider and Gerken 2026

These works already occupy the distinction between legitimate and misleading simplification and the relevance of context, audience, platform, and framing (Gelfert and Schneider 2025Gerken 2026).

Consequently PEHI cannot claim novelty for:

Legitimate\ Simplification \neq Misleading\ Simplification.

Its residual sequencing is:

Source\ Eligibility \rightarrow Transmission\ Eligibility \rightarrow Transformation\ Analysis.

11.3 Pils and consensus-sensitive reporting

Pils (2025) already argues that reporting should track the epistemic configuration of expert communities.

PEHI therefore cannot claim originality for aligning public representation with expert status. Its source gate instead asks whether a bounded proposition belongs to the target mature-source class before the public artifact is analyzed.

11.4 Sumner and ordinary source comparison

This is the strongest rival.

Sumner et al. (2014) demonstrate that source-to-report transformation can be operationally coded without PEHI terminology.

More fundamentally, a careful analyst can compare the WHO/IARC source with the Standard headline and observe directly:

Same\ Group\not\Rightarrow Same\ Danger.

Therefore:

\boxed{ Ordinary\ careful\ source\ comparison can\ reproduce\ the\ processed\text{-}meat\ diagnosis. }

PEHI cannot be defended as a uniquely powerful detection device.

11.5 What the architecture adds

Generic source comparison does not by itself require an analyst to pre-specify:

  1. which source propositions qualify for the target mature-source class;

  2. whether similarity counts as a handoff without transmission evidence;

  3. whether analyst-visible traceability is distinct from audience-visible provenance;

  4. whether representation units must be reconstructed separately before artifact judgment;

  5. whether recipient beliefs may be inferred from textual properties;

  6. whether a materially stronger public proposition requires an explicit bridge and warrant;

  7. whether a material transition remains reconstructable from the representation and traceable source relation;

  8. whether bridge-dominant expert extrapolations should be excluded from ordinary science-to-public handoffs.

Any careful analyst can impose these constraints.

The PEHI proposal is to make them explicit, ordered, and pre-specified.

Thus the residual claim is not:

PEHI>Source\ Comparison

in diagnostic power.

It is:

\boxed{ PEHI= Constrained\ Source\ Comparison within\ a\ Pre\text{-}Specified\ Handoff\ Architecture. }

11.6 Defeat conditions

The architecture should be narrowed or abandoned under any of the following conditions.

Source-gate redundancy. If requiring mature operative status does not alter case selection or interpretation, the gate is analytically redundant.

Traceability redundancy. If source-to-public relations cannot be meaningfully distinguished from thematic similarity, (Trace_A) adds no discipline.

Materiality indeterminacy. If the Inferential-Difference Test cannot constrain coder judgment beyond impressionistic semantic comparison, the core audit loses operational value.

Prior-framework total equivalence. If an existing framework is shown to instantiate the same complete source gate, traceability distinction, Representation-Unit analysis, inferential-difference procedure, stronger-target bridge reconstruction, recoverability check, provenance distinction, recipient non-inference, and bridge exclusion at equivalent granularity, PEHI is redundant.

Recipient leakage. If useful PEHI judgments repeatedly require unsupported claims about what audiences believed or inferred, the representation-side scope fails.

Boundary collapse. If bridge-dominant philosophical, normative, or policy extrapolations cannot be distinguished from ordinary public representation of scientific claims, the target class collapses.

A separate portability limitation remains: if the same protocol cannot be applied intelligibly in scientifically distinct domains without changing its core rules, any claim of cross-domain portability must be withdrawn. This is a scope limitation rather than an additional core defeat condition.

11.7 Final residual contribution

The final contribution claim is therefore:

PEHI should be understood not as an alternative to careful source comparison, Justification Reporting, consensus-sensitive reporting, or appropriate-simplification analysis, but as a pre-specified audit architecture for deciding which mature scientific source-to-public episodes enter analysis, how their transmission is reconstructed, which inferential changes are tested, how materially stronger bridges and their warrant remain inspectable, and which conclusions the analyst is not permitted to draw.

This is a methodological integration claim, not a component-novelty claim.

12. Conclusion — From Scientific Claims to Auditable Public Handoffs

Scientific claims do not cease to have an epistemic history when they become publicly familiar. Between a claim's operative use within a specialist community and its appearance in journalism, institutional summaries, educational materials, or expert public communication lies a transition in which wording, evidential detail, scope, uncertainty, boundaries, and justificatory presentation may all change.

Some of these changes are indispensable consequences of communication across differences in expertise. Others alter what the public representation is inferentially entitled to assert.

The distinction cannot be captured by literal fidelity:

\boxed{Public\ Epistemic\ Integrity\neq Literal\ Fidelity.}

Nor can it be captured simply by the quantity of scientific justification communicated. A public representation may omit most of the evidence available to specialists while preserving the relevant proposition and its inferential boundaries. Conversely, a representation may communicate substantial scientific information while adding a proposition that the source does not license.

The architecture developed here begins from a deliberately restricted object. Before a public representation is audited, a bounded source claim must be independently established as operative within a specified specialist community:

Op_{\mathcal C}(q_S),

and an analytically defensible source-to-public relation must be established:

Trace_A(q_S,r_P).

Only then is the handoff reconstructed:

q_S\xrightarrow{H_P}r_P.

This sequencing matters because public prominence cannot establish prior scientific operativity, thematic similarity cannot establish transmission, and scientific prestige cannot convert every proposition advanced by a scientist into an operative scientific claim. It also requires a distinction between scientific content and socially distributed scientific authority: authority may signal provenance or specialist standing without licensing a stronger public proposition.

Within an admitted handoff, PEHI compares source-side and representation-side inferential commitments rather than measuring linguistic similarity:

InferentialCommitments(P_S) \stackrel{?}{=} InferentialCommitments(P_P).

The requirement to test the strongest plausible non-material interpretation first is equally important. It prevents dramatic language, pedagogical compression, metaphor, or stylistic simplification from being treated as epistemic failure merely because they depart from specialist discourse. Where a material public proposition introduces a stronger target, the audit then reconstructs the bridge or added premise, asks what warrant supports it and what would defeat it, and tests whether the transition remains recoverable from the representational record.

The cases illustrate why these restrictions matter.

The IPCC Summary for Policymakers compresses an extensive scientific assessment while preserving the relevant human-attribution proposition. Reuters intensifies the rhetoric but no material transformation of that proposition is established. The H. pylori cases show a similar pattern in a different scientific domain: broad public shorthand coexists with artifact-level restoration of the relevant causal boundaries. These cases principally test false-positive resistance.

The mediated processed-meat stress case exercises the opposite direction. There, the transition from an evidence-based carcinogenicity classification to the proposition that processed meat poses a cancer threat comparable to smoking introduces an additional comparative-risk commitment. WHO/IARC explicitly distinguishes membership in the same carcinogenicity category from equality of danger. The public artifact nevertheless preserves some quantitative and qualifying information from which the source boundary can be partially reconstructed. The case therefore supplies a positive material-transformation stress test with partial recoverability, not validation of a general measurement instrument.

The Hawking boundary case shows why source eligibility cannot be replaced by scientific prestige. Where scientific or theoretical resources are joined to substantive philosophical premises to produce a broader metaphysical conclusion, the appropriate reconstruction is not necessarily an ordinary science-to-public handoff. Exclusion is part of analytical discipline.

These results should not be interpreted as evidence that public scientific communication normally degrades scientific knowledge. The cases were purposively selected to stress different parts of the architecture and do not constitute a representative sample. They provide no estimate of the frequency of material transformation, no population-level measure of reporting quality, and no empirical evidence about how actual audiences understood the representations examined.

Nor does PEHI provide privileged access to errors unavailable to existing approaches. Gerken's scientific-testimony framework, the appropriate-simplification literature, consensus-sensitive reporting, risk-communication analysis, and careful source comparison can reproduce substantial parts of the local diagnoses.

Accordingly, the proposed contribution is not a new theory of scientific testimony, consensus reporting, public trust, appropriate simplification, knowledge transmission, or source comparison.

The proposed increment is methodological integration and sequencing.

PEHI requires the analyst to determine, in advance and explicitly:

  • whether the bounded scientific proposition belongs to the target mature-source class;

  • whether the public representation is actually traceable to that source environment;

  • which Representation Unit is being compared;

  • whether a linguistic difference changes inferential commitments;

  • whether an added bridge proposition has appeared and what warrant licenses it;

  • whether a material transition remains reconstructable from the representation and traceable source relation;

  • whether analyst-visible traceability is being confused with audience-visible provenance;

  • whether communicated scientific justification is being confused with prestige or other observable acceptance cues;

  • and whether claims about the representation are being silently converted into claims about what recipients believed.

None of these operations is individually claimed as novel. Their proposed value lies in placing them inside one pre-specified audit sequence for a restricted class of mature science-to-public transitions.

This also defines the limits of the architecture.

Source operativity remains historically and community relative and may be difficult to establish in contested or rapidly moving fields. Analytical traceability may be composite rather than linear, as the processed-meat case demonstrates. The Inferential-Difference Test remains a reconstruction procedure whose reliability would require inter-coder testing before any validation claim could be made. The strict core cases establish neither a material-transformation positive case nor representative domain coverage; the mediated processed-meat case tests the transformation procedure outside the simplest core structure. The cases establish no predictive validity. PEHI deliberately stops before questions of actual audience uptake, policy recommendation, administrative authorization, political mobilization, and downstream civil consequence.

Those limitations are part of the proposal's intended boundary.

The public communication of science cannot reasonably be governed by a demand that every recipient reproduce specialist inquiry. Epistemic dependence, testimony, abstraction, and simplification are structural conditions of modern scientific culture. The relevant demand is therefore not informational maximalism but preservation of material inferential boundaries and reconstructability of materially stronger transitions.

A public representation may differ substantially from its scientific source while remaining epistemically disciplined. What matters is whether the transformation gives the receiving claim inferential powers that require an additional premise, altered scope, changed claim type, suppressed boundary, or comparable epistemically material step, and whether the bridge and warrant licensing that stronger proposition remain explicit or reconstructable from the representational record.

The final distinction is therefore:

\boxed{ Compression \neq Transformation \neq Unsupported\ Inferential\ Expansion. }

A second distinction now follows:

\boxed{ Material\ Transformation \neq Unrecoverable\ Transformation. }

And the role of PEHI is correspondingly modest:

\boxed{ PEHI= a\ source\text{-}gated,\ traceable,\ inferentially\ disciplined audit\ architecture }

for keeping those three possibilities analytically separate.

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RATIUM.AI. 2026c. “Who Needs Mutation? Causal Jurisdiction, Synthetic Ancestry, and the Retrospective Construction of the Modern Synthesis.” https://www.ratium.ai/articles/a2-who-needs-mutation.

RATIUM.AI. 2026d. “Mutation as Missing Input: Adaptation, Formalisation Asymmetry, and the Canonical Recomposition of the Modern Synthesis.” https://www.ratium.ai/articles/a1-mutation-as-missing-input.

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Related Source and Reference Pages

This article audits public representation after a scientific claim has acquired operative status. The sources below connect it to the companion study of scientific correction that can precede such status and to the positioning synthesis that defines their interface while preserving formal independence.

Scientific Correction Between Popper and Kuhn

This article develops a domain-limited Popper–Kuhn synthesis at the level of scientific correction. It treats Operational Stability and Corrective Reopenability as joint requirements of sustained corrigible inquiry and reconstructs a correction episode across scientific disturbance, attributed corrective problem, mature epistemic case, and community-indexed operative scientific state. It proposes Corrective Handoff Integrity as an audit of whether warrant, uncertainty, target, scope, added premises, and reopenability survive transitions between these states. The framework does not reconcile Popper and Kuhn generally, model every form of scientific change, treat anomalies as automatic falsifiers, provide an AI-governance model, or claim that its audit has been empirically validated.

The Epistemic Career of Scientific Knowledge

This positioning synthesis relates two independently readable epistemic architectures at the junction between community-operative scientific status and public representation. Scientific Correction Between Popper and Kuhn localizes a correction-specific path toward operative scientific status; Public Epistemic Handoff Integrity begins from an independently established operative source claim and audits its transition into public representation. The page preserves the distinction among propositional content, scientific warrant, operative status, distributed authority, public representation, and recipient uptake. It is not a third substantive theory or a universal model of knowledge transfer, and conceptual continuity between the two studies does not create formal dependence.

RATIUM.AI — LoopGuard-AI governance architecture and Central Equilibrium Problem research by Benny Dunavich, focused on AI governance, cognitive duality, Pareto efficiency, decision-control systems, auditability, evaluation architecture, and stable governance layers for AI systems.

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