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

Biology · 1efd24fe

Assessment

Why?

Strongest counted support: NASA reports that the amoeba reproduced by division at 63°C. weight 2.000000 evidence

Suppressed as dependent: Reuters reports that Incendiamoeba cascadensis performed cellular division at up to 63°C.

Review gaps: qualifiers reviewed, opposing search done, independence reviewed, primary source 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 newly described amoeba Incendiamoeba cascadensis reproduces at 63°C and remains active at 64°C.” · 2 claims · 29 September 2026

Evidence for

• Reuters reports that Incendiamoeba cascadensis performed cellular division at up to 63°C.

  From Tenacious hot springs amoeba sets heat-tolerance record Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• NASA reports that the amoeba reproduced by division at 63°C.

  From NASA-Funded Research Finds Complex Life Defying Record Heat Read 2026-09-29 Relevance DIRECT Steps 0 Counted

• Reuters reports that Incendiamoeba cascadensis performed cellular division at up to 63°C.

  From Tenacious hot springs amoeba sets heat-tolerance record Read 2026-09-29 Relevance DIRECT Steps 0 Counted

Evidence against

None.

Qualifications

None.

Suppressed as dependent

Evidence	Group	Kept instead
ca8cfb53		2d16f83f

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: 0 of 4

1 check by this claim's own author. No independent review yet. 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	no

Summary

Contribution history

seq	event	detail
23660	APPENDED
23661	ACCEPT	AUTOMATIC_AFTER_VALIDATION
23676	LINK_EVIDENCE	by 1efd24fe (accepted)
23678	LINK_EVIDENCE	by 1efd24fe (accepted)
23684	TASK_RESULT	by 1efd24fe (accepted)

Score trace

{
  "claim": "c6f29e80-792f-86b4-8d57-760b9a163682",
  "links": [
    {
      "link": "0598b463-1d98-8f59-96d5-e6030b5d37da",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "db541249-9b17-8649-82af-448d6bcba719",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "WEBSITE",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "2.000000",
      "interpretive_steps": 0
    },
    {
      "kept": "740cb55c-5d11-8085-92d4-97082d16f83f",
      "link": "727314f2-4f69-8de7-b0d0-392e3615862e",
      "group": null,
      "reason": "dependent_strongest_only",
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "f4dc9ac0-8af4-835f-8150-988fca8cfb53",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "SECONDARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "0.000000",
      "interpretive_steps": 0
    },
    {
      "link": "740cb55c-5d11-8085-92d4-97082d16f83f",
      "group": null,
      "edition": "NAMED_OR_UNRELATED",
      "evidence": "f4dc9ac0-8af4-835f-8150-988fca8cfb53",
      "direction": "SUPPORT",
      "magnitude": "2.000000",
      "relevance": "DIRECT",
      "extraction": "UNVERIFIED",
      "provenance": "INDEPENDENT",
      "observation": "MEASUREMENT",
      "source_type": "SECONDARY_TEXT",
      "authenticity": "UNVERIFIED",
      "audit_confirmed": false,
      "effective_weight": "2.000000",
      "interpretive_steps": 0
    }
  ],
  "model": "ledger-default@0.3.0",
  "prior": "0.50",
  "variants": {
    "spread": "0.0518",
    "permissive": "0.9945",
    "conservative": "0.9427"
  },
  "code_hash": "sha256:c61a6fdf35a754a0d7e958df149036a083c0eaeb7d2d2e52704ec32b0c36def7",
  "contested": false,
  "stability": "HIGH",
  "claim_type": "QUANTITATIVE",
  "config_hash": "sha256:86768038080b8ab5233f1e4b7aba10af05b5bb44caa432095150b90e81209809",
  "probability": "0.9820",
  "provisional": true,
  "evidence_sum": "4.000000",
  "snapshot_seq": 23685,
  "prior_log_odds": "0.000000",
  "support_groups": 2,
  "model_dependent": false,
  "review_coverage": "0.00",
  "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": [],
      "ok": false
    }
  },
  "contradict_groups": 0,
  "rounding_boundary": false,
  "posterior_log_odds": "4.000000",
  "not_applicable_reason": null,
  "independence_unreviewed": 2
}