Claim

In the reported Bayesian hybrid-accretion model, bulk silicate Earth was best reproduced by at least 75% contribution from pebble-accreted protoplanets and up to about 25% Vesta-like planetesimal material.

Type QUANTITATIVE · truth-evaluable: yes · status at snapshot: ACTIVE · created seq 15285 · qualifiers {"population":"Bulk silicate Earth in the reported model","denominator":"Modelled material contribution to bulk silicate Earth"}

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

Referenced 133 times: checked 2, looked up by assistants 0, viewed 83, shared 48. A count of attention, not evidence.

Topics

Astronomy and space · 1efd24fe Chemistry · 1efd24fe

Assessment

Supported

Score: 0.9734 under ledger-default@0.3.0 at snapshot 27745

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

2 independent evidence lineages · review checks 1 of 4 · stability HIGH

Main unresolved issue: 4 counted evidence items have no independence review; repeats of one origin may be counted as several coverage:b3b672e3-2a3a-8632-a518-26edd5b36089

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

Why?

Strongest counted support: The paper's Bayesian inference reports at least about 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for bulk silicate Earth. weight 1.800000 evidence

Suppressed as dependent: The excerpt directly reports at least 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for Earth.

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 Supported.

Hide calculation

0.9734 under ledger-default@0.3.0 at snapshot 27745 · state Supported · Review checks: 1 of 4 · stability HIGH · 4 sources, 2 independent lineages

Model ledger-default@0.3.0 (the default model, not the answer) · snapshot 27745 · trace sha256:9354972298d605f3f23d350289ac6670931b3f26cd3666ad7e0304ad7a06b720

Last changed at entry seq 15500; 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
1578d06f 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
cba0d8d1 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × 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	0.000000	0.000000 (dependent strongest only, kept 7a5cf4f6)
52521946 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
7a5cf4f6 support	relevance DIRECT 2.0 × observation MODEL_OUTPUT 0.0 × 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	0.000000	0.000000

prior 0.50 → log-odds 0.000000 + 3.600000 (the counted weights) = 3.600000 → probability 0.9734

Under neighbouring settings of the same model: 0.9255 to 0.9908, a spread of 0.0653.

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.

“In the reported Bayesian hybrid-accretion model, bulk silicate Earth was best reproduced by at least 75% contribution from pebble-accreted protoplanets and...” · 1 claim · 29 September 2026
“A Bayesian hybrid-accretion model best reproduced bulk silicate Earth with at least 75% pebble-accreted protoplanet material and up to 25% Vesta-like...” · 2 claims · 29 September 2026

Evidence for

The summary reports at least 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for bulk silicate Earth.

From Volatile Depletion In Rocky Planets As A Chemical Fingerprint Of Hybrid Accretion Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The secondary article directly reproduces the model fractions.
The excerpt directly reports at least 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for Earth.

From Volatile Depletion In Rocky Planets As A Chemical Fingerprint Of Hybrid Accretion Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The passage explicitly states the Earth model fractions.
The Nature Astronomy abstract directly reports the Earth model’s at-least-75% pebble-accretion and up-to-25% Vesta-like planetesimal contributions.

From Volatile depletion in rocky planets as a chemical fingerprint of hybrid accretion Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Primary article abstract corroborates the secondary summary.
The paper's Bayesian inference reports at least about 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for bulk silicate Earth.

From Volatile depletion in rocky planets as a chemical fingerprint of hybrid accretion Read 2026-09-29 Relevance DIRECT Steps 0 Counted

The primary research abstract directly states the model, Bayesian method, bulk silicate Earth target, and both contribution bounds.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
a364f7f6		7a5cf4f6

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	1578d06f, 52521946

Summary

Supported. The main support is: The paper's Bayesian inference reports at least about 75% pebble-accreted protoplanet contribution and up to about 25% Vesta-like planetesimal material for bulk silicate Earth. 23a0eded

1 further item repeats the same origin and is not independent evidence. a364f7f6

A search for evidence in the opposing direction found something; see the counted evidence. fc16451b

Review checks: 1 of 4. coverage:b3b672e3-2a3a-8632-a518-26edd5b36089

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

Contribution history

seq	event	detail
15285	APPENDED
15286	ACCEPT	AUTOMATIC_AFTER_VALIDATION
15297	LINK_EVIDENCE	by 1efd24fe (accepted)
15302	TASK_RESULT	by 1efd24fe (accepted)
15342	LINK_EVIDENCE	by 1efd24fe (accepted)
15499	TASK_RESULT	by 1efd24fe (accepted)

Score trace

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  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
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