Claim

In the study’s mass-balance tests, the permissible carbonaceous CI contribution to the bulk silicate Earth was constrained below approximately 0.3% by ruthenium and below 2% by calcium.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 19957

27 words; atomic claims are usually under 25a conjunction joins clauses that may be separately evaluable

Referenced 100 times: checked 1, looked up by assistants 0, viewed 76, shared 23. A count of attention, not evidence.

Topics

Earth science · 1efd24fe Chemistry · 1efd24fe

Assessment

Supported

Score: 0.8581 under ledger-default@0.3.0 at snapshot 27745

3 of 4 review checks done · 1 counted · 2 by the author only

1 independent evidence lineage · review checks 1 of 4 · stability MEDIUM

Main unresolved issue: 3 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:79364f66-47b5-80a3-894f-ddf860bb24dd

Not yet independently audited.Evidence reviewed so far supports this claim, but only 1 of 4 review checks has been done.A quoted passage from nature.com was not found on the page when Galedra fetched it.

Why?

Strongest counted support: The excerpt reports ε100Ru-based fCI below approximately 0.3 percent and ε48Ca-based fCI below approximately 2 percent in the bulk silicate Earth/bulk Earth context. weight 1.800000 evidence

Suppressed as dependent: The primary study reports upper bounds from its CI mass-balance tests.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Unresolved.

Hide calculation

0.8581 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability MEDIUM · 3 sources, 1 independent lineage

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:75bf01b4854288952cbc254e5fe68d5fe49da0587e0aa9bb3f4d568f507f9c46

Last changed at entry seq 25764; nothing logged since has borne on this claim.

How the number was reached

Each counted link is weighed by multiplying the factors the model declares; a factor it does not declare is not shown. Every factor name below links to what that number means.

Link	Working	Weight	Counted as
6e64bcb1 support	relevance DIRECT 2.0 × observation CALCULATION 0.7 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.400000	0.000000 (dependent strongest only, kept 1d7ac882)
20675a8c qualify	relevance MODERATE 0.6 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	0.540000	0.000000 (non directional)
1d7ac882 support	relevance DIRECT 2.0 × observation DIRECT_TEXT 0.9 × interpretation 0 steps, 1 − 0.15 × 0 1.000000 × authenticity UNVERIFIED 1.0 × extraction UNVERIFIED 1.0 × provenance INDEPENDENT 1.0 × edition NAMED_OR_UNRELATED 1	1.800000	1.800000

prior 0.50 → log-odds 0.000000 + 1.800000 (the counted weights) = 1.800000 → probability 0.8581

Under neighbouring settings of the same model: 0.7790 to 0.9121, a spread of 0.1331.

Half-even rounding, six places for weights and four for the probability. The same inputs under the same model reproduce this exactly; that is what the trace hash above is for. How a score is worked out explains every factor, why it is there, and what the model sets it to.

Your view

Registered views

Nobody has registered a view yet.

Registered views are personal belief, not evidence: they never change Galedra's assessment. Affiliations are self-declared and shown only for groups of 5 or more.

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

“A multivariate isotope analysis examined the provenance of Earth’s bulk silicate composition across ten nucleosynthetic isotope anomalies.” · 3 claims · 29 September 2026

Evidence for

The primary study reports upper bounds from its CI mass-balance tests.

From Homogeneous accretion of the Earth in the inner Solar System Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary mass-balance calculations.
The excerpt reports ε100Ru-based fCI below approximately 0.3 percent and ε48Ca-based fCI below approximately 2 percent in the bulk silicate Earth/bulk Earth context.

From Homogeneous accretion of the Earth in the inner Solar System Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The passage directly supports both element-specific upper bounds and the BSE setting.

Evidence against

None.

Qualifications

The quoted bounds include Ru ±0.1% and Ca ±0.2% uncertainties, and calcium distinguishes BSE from bulk-Earth scope.

From Homogeneous accretion of the Earth in the inner Solar System Read 2026-09-29 Relevance MODERATE Steps 0 Counted

The headline rounds bounds and omits their uncertainties and calcium reservoir distinction.

Suppressed as dependent

Evidence	Group	Kept instead
c6f9f077		1d7ac882

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 1 of 4

3 checks by this claim's own author, alongside the independent review above. 1 OPPOSING EVIDENCE SEARCH · 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	no
opposing search done	no
independence reviewed	no
primary source reviewed	yes	6e64bcb1, 20675a8c, 1d7ac882

Summary

Supported. The main support is: The excerpt reports ε100Ru-based fCI below approximately 0.3 percent and ε48Ca-based fCI below approximately 2 percent in the bulk silicate Earth/bulk Earth context. a53e3d96

1 further item repeats the same origin and is not independent evidence. c6f9f077

Qualifier: The quoted bounds include Ru ±0.1% and Ca ±0.2% uncertainties, and calcium distinguishes BSE from bulk-Earth scope. 6ae7e7c4

A search for evidence in the opposing direction found none. dc6d8cfc

Review checks: 1 of 4. coverage:79364f66-47b5-80a3-894f-ddf860bb24dd

Generated by stub-v0.1; every sentence cites graph ids.

Contribution history

seq	event	detail
19957	APPENDED
19958	ACCEPT	AUTOMATIC_AFTER_VALIDATION
19971	LINK_EVIDENCE	by 1efd24fe (accepted)
24130	TASK_RESULT	by 1efd24fe (accepted)
25034	TASK_RESULT	by 1efd24fe (accepted)

Score trace

{
  "claim": "79364f66-47b5-80a3-894f-ddf860bb24dd",
  "links": [
    {
      "kept": "c2d9765d-76f0-89eb-91aa-5d761d7ac882",
      "link": "6e09b4e9-e839-8d67-843c-cf4a6e64bcb1",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "6566e78a-e0c3-8bb8-adce-34c8c6f9f077",
      "direction": "SUPPORT",
      "magnitude": "1.400000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "CALCULATION",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    },
    {
      "link": "c1141021-4836-829b-8fc1-012b20675a8c",
      "group": null,
      "reason": "non_directional",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "cbb9f245-a7c5-83dc-9055-b5d36ae7e7c4",
      "direction": "QUALIFY",
      "magnitude": "0.540000",
      "relevance": "MODERATE",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DIRECT_TEXT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    },
    {
      "link": "c2d9765d-76f0-89eb-91aa-5d761d7ac882",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "90356ef6-a382-8a80-9746-d95ba53e3d96",
      "direction": "SUPPORT",
      "magnitude": "1.800000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "DIRECT_TEXT",
      "source_type": "PRIMARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "1.800000",
      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.1331",
    "permissive": "0.9121",
    "conservative": "0.7790"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "MEDIUM",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.8581",
  "provisional": true,
  "evidence_sum": "1.800000",
  "snapshot_seq": 25764,
  "prior_log_odds": "0.000000",
  "support_groups": 1,
  "model_dependent": false,
  "review_coverage": "0.25",
  "truth_evaluable": true,
  "assessment_state": "SUPPORTED",
  "review_checklist": {
    "qualifiers_reviewed": {
      "by": [],
      "ok": false
    },
    "opposing_search_done": {
      "by": [],
      "ok": false
    },
    "independence_reviewed": {
      "by": [],
      "ok": false
    },
    "primary_source_reviewed": {
      "by": [
        "6e09b4e9-e839-8d67-843c-cf4a6e64bcb1",
        "c1141021-4836-829b-8fc1-012b20675a8c",
        "c2d9765d-76f0-89eb-91aa-5d761d7ac882"
      ],
      "ok": true
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "1.800000",
  "not_applicable_reason": null,
  "independence_unreviewed": 3
}