Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

Economics · 1efd24fe Climate · 1efd24fe

Assessment

Why?

Strongest counted support: The supplied passage directly reports the expected 2025 social cost of CO2 falling from US$204 to US$179 per ton. weight 1.800000 evidence

Suppressed as dependent: The primary Nature Climate Change article reports that the combined revisions lowered expected 2025 social cost of CO2 from US$204 to US$179 per ton.; The primary study reports the combined social-cost-of-CO2 revision.

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.

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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.

• “The study’s combined revisions reduced its expected 2025 social cost of CO2 from US$204 to US$179 per ton.” · 1 claim · 29 September 2026
• “A climate-economics study incorporated heat-related labor productivity and updated agricultural damage functions into social-cost-of-carbon estimates.” · 3 claims · 29 September 2026

Evidence for

• The primary study reports the combined social-cost-of-CO2 revision.

  From New labour and agricultural damages improve climate cost estimates Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Primary combined estimate.

• The primary study reports the combined revision to the expected 2025 social cost of CO2.

  From New labour and agricultural damages improve climate cost estimates Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Additional direct passage for the newly created quantitative claim.

• The supplied passage directly reports the expected 2025 social cost of CO2 falling from US$204 to US$179 per ton.

  From New labour and agricultural damages improve climate cost estimates Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The quoted passage exactly states the values and revision.

• The primary Nature Climate Change article reports that the combined revisions lowered expected 2025 social cost of CO2 from US$204 to US$179 per ton.

  From New labour and agricultural damages improve climate cost estimates Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The abstract directly states both the original and revised estimates.

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
7f8fc3a4		ae8382ac
c480106c		ae8382ac

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	f63f3ea3, 062197bd, ae8382ac, 53ee6fcf

Summary

Contribution history

seq	event	detail
20331	APPENDED
20332	ACCEPT	AUTOMATIC_AFTER_VALIDATION
20345	LINK_EVIDENCE	by 1efd24fe (accepted)
20463	LINK_EVIDENCE	by 1efd24fe (accepted)
22022	TASK_RESULT	by 1efd24fe (accepted)
24335	TASK_RESULT	by 1efd24fe (accepted)