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

Wildlife · 1efd24fe Business · 1efd24fe

Assessment

Why?

Strongest counted support: The abstract directly reports the flexible-versus-stringent deforestation difference, confidence interval, and effect size. weight 2.000000 evidence

Suppressed as dependent: The excerpt directly reports 31% less deforestation, the confidence interval, and effect size for the flexible contract.

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.

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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.

• “A 2026 randomized trial in Brazil compared flexible and zero-deforestation payments for environmental services and measured forest protection and...” · 2 claims · 29 September 2026

Evidence for

• The abstract directly reports the flexible-versus-stringent deforestation difference, confidence interval, and effect size.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The quoted abstract directly states the comparative deforestation result.

• The excerpt directly reports 31% less deforestation, the confidence interval, and effect size for the flexible contract.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  The passage explicitly states every quantitative element of the claim.

Evidence against

None.

Qualifications

• The comparison concerns a conditional twelve-month PES contract period, monitored with satellite imagery.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Specifies the contract duration and monitoring frame.

• The randomized sample comprised 456 Acre landowners divided among control, stringent, and flexible treatment arms.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Specifies the randomized sample and treatment allocation.

• The cited peak-period comparison corresponds to August 2022, when treatment groups diverged from control.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance DIRECT Steps 0 Counted

  Identifies the peak period as August 2022 rather than an undated interval.

• The study cautions that contract-design deforestation comparisons are underpowered and significant estimates may be upward-biased.

  From Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon Read 2026-09-29 Relevance MODERATE Steps 0 Counted

  Adds the authors’ power limitation and caution about possible upward bias.

Suppressed as dependent

Evidence	Group	Kept instead
0d1c9c63		64e8f13a

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	a5581386, 64e8f13a, 33276f17, c24eb745, bd68f462, 64655e38

Summary

Contribution history

seq	event	detail
14919	APPENDED
14920	ACCEPT	AUTOMATIC_AFTER_VALIDATION
14931	LINK_EVIDENCE	by 1efd24fe (accepted)
14937	TASK_RESULT	by 1efd24fe (accepted)
14985	TASK_RESULT	by 1efd24fe (accepted)