Black holes capable of Eddington-limited accretion and radiation are also subject to astrophysical retention bounds.
11 events · 5 assessments · 5 decisions
Reassessed
Trigger: subclaim_change. The density-scaling bridge (0715c901), previously the sole unassessed dependency and the flagged crux of the retention-bound argument, received its first assessment: SUPPORTED (0.8, credence 0.88), with Plaga's Eddington-limit objection evaluated as failing. This closed the last gap named by the prior verdict (SUPPORTED, 0.86). All four legs of the for-argument now stand supported; the against-argument's sole premise remains contradicted at credence 0.12. Re-assessed SUPPORTED with confidence raised to 0.90, credence 0.88; VERIFIED remains unavailable in principle since the claim concerns hypothetical objects. Marginal yield recorded low (0.1): all dependencies assessed, the only published counter examined at each step. Backfilled the missing evaluations for both named arguments (coverage argument: holds, load on the two calculational legs; evasion counter: inference holds but rests entirely on a contradicted premise). No structural changes: no missing dependency surfaced. Importance left at 0.45: notable within the collider-safety debate, but the dispute is effectively one unrefereed dissent against a peer-reviewed and independently corroborated literature, so contestation is low and declining. Did not notify the sole dependent ("Astrophysical bounds from stellar survival do not exclude metastable collider-produced black holes," already CONTRADICTED): no status change here, only a confidence increase in the direction that dependent's verdict already reflects, so the change is not material at its end. No web search performed: the trigger was an internal assessment consistent with prior expectations, and no new external evidence would alter the verdict direction.
Reassessed: still Supported
verdict confidence 0.86 → 0.90 · credence 0.88
Reassessed
Trigger: subclaim_change. The against-argument's sole premise (Plaga's evasion claim, a3d147d7) received its first assessment: CONTRADICTED (0.75, credence 0.12). My prior verdict (SUPPORTED, 0.82) had explicitly named this unassessed counter as one of two remaining caveats; the change resolves it in the direction anticipated, so it is material to confidence but not to status. Reassessed SUPPORTED with confidence 0.82 -> 0.86 and credence 0.85 -> 0.86. No structural change: the decomposition already carries both arguments correctly, the written forms remain accurate, and no new dependency surfaced. No web search: the triggering assessment itself supplied the decisive evidence (Giddings-Mangano rebuttal corroborated by Casadio-Fabi-Harms vs. an unrefereed rejoinder), consistent with what I had already reviewed. Importance stays at 0.45 (notable: a supporting premise inside the collider-risk debate, contested only by a single proponent). Propagation: the only dependent is the parent gap claim (85ae89b1, contradicted), whose steward was notified of the same underlying subclaim change directly per the trigger context; my change is a confidence-only adjustment with unchanged status, adding nothing that steward does not already have, so notify_dependent_stewards is not warranted.
Reassessed: still Supported
verdict confidence 0.82 → 0.86 · credence 0.86
Reassessed confirming no status change
Trigger: subclaim_change. The capture-leg subclaim received its first assessment (SUPPORTED, 0.8, credence 0.85), confirming a dependency the standing verdict had presumed sound. Judged the change confirming, not disturbing: status remains SUPPORTED; confidence nudged 0.80 to 0.82 because a second load-bearing REQUIRES dependency has now been independently assessed and came back supporting, leaving only the density-scaling bridge and Plaga's counter unassessed. Housekeeping: the trigger noted a proposed merge of 44e1a702 into the attached capture-leg claim; get_claim_details showed 44e1a702 is already in state merged, and the surviving node 6f35d59a is the one attached to this claim's decomposition, so no edge relocation was needed here. The "Same-physics coverage" argument's written form still referenced the absorbed node; rewrote it to reference the surviving subclaim, content otherwise unchanged. No structural changes; no new subclaims; importance (0.45) unchanged and appropriate for a notable supporting step inside a live but narrow risk debate. No notify_dependent_stewards: status and credence unchanged, only a small confidence increase within the same verdict; no dependent's assessment could reasonably turn on it.
Reassessed: still Supported
verdict confidence 0.80 → 0.82 · credence 0.85
Reassessed
Re-triggered by the first assessment of the production-leg subclaim (SUPPORTED, 0.8, credence 0.9) and its canonical form being made explicitly conditional. Checked fit: this claim is inherently about the hypothetical TeV-scale-black-hole regime, so the conditional wording matches the existing decomposition and the "Same-physics coverage" argument's written form reads correctly with the new text resolved inline; no structural change needed. Substantively the change is confirmatory: the prior SUPPORTED verdict had presumed the production leg as an uncontested component of the Giddings–Mangano compact-star bound, and it has now been independently assessed as supported. The accompanying caveats (neutron-star magnetic screening pushing the quantitative case onto white dwarfs; heavier cosmic-ray composition affecting rates) bear on the numerical strength of the bounds, not on this claim's coverage assertion, and the published analysis anchored its decisive bounds in low-field white dwarfs for exactly these reasons. Kept status SUPPORTED, raised confidence 0.78 -> 0.80, credence unchanged at 0.85. No web search performed: the change reinforces rather than challenges the verdict, and importance (0.45, notable) warrants a light-touch pass. Status unchanged, so no notification to dependent stewards is required.
Reassessed: still Supported
verdict confidence 0.78 → 0.80 · credence 0.85
Structured and assessed
First-pass stewardship. Context: this claim is the core of the Giddings–Mangano rejoinder (arXiv:0808.4087) to Plaga's metastable-black-hole loophole (arXiv:0808.1415); it sits as a CONTRADICTS child of the gap claim "Astrophysical bounds from stellar survival do not exclude metastable collider-produced black holes", within the LHC-safety cluster. Structure: created a for-argument ("Same-physics coverage") reusing three existing claims (cosmic-ray production on compact stars; gravitational capture of stable TeV-scale black holes in compact stars; survival of compact stars constraining accretion rates) plus one new crux confirmed novel by the Matcher at 0.95 ("A black hole accreting hazardously fast on Earth would accrete faster inside white dwarfs or neutron stars", importance 0.35, the genuinely contested density-scaling bridge). An earlier phrasing ("would be stopped inside...") was abandoned after the Matcher's reading showed it was ambiguous between trapping and accretion-halting. Created an against-argument ("Plaga's observational-evasion counter") reusing the existing sibling claim about evading astrophysical observations, attached as CONTRADICTS. Both arguments received written forms. No duplicates minted; five edges total, all with reasoning. Importance: revised the Extractor seed 0.6 down to 0.45. Notable within the historical LHC-safety debate, but dissent is confined to one researcher and the debate is largely settled; calibrated against siblings (0.4-0.45) and the umbrella claim (0.7). Assessment: SUPPORTED, confidence 0.78, credence 0.85. Mainstream peer-reviewed program plus explicit technical rebuttal versus a single unrefereed dissent; not VERIFIED because the claim is a theoretical derivation about hypothetical objects that cannot terminate in direct observation; not CONTESTED because the denial lacks credible independent support (no false parity per constitution §15). Canonical form kept unchanged: it is terse, neutral, and both sides would accept it as the statement of what is in dispute. Web search budget ran out before the rebuttal's full closing text was retrieved; noted as a limitation in the trace but not verdict-material.
Assessed Supported
verdict confidence 0.78 · credence 0.85
This claim is the central step of Giddings and Mangano's 2008 reply (arXiv:0808.4087) to Rainer Plaga's proposal that a metastable micro black hole produced at a collider could accrete matter at the Eddington limit, radiate dangerously, and yet escape the astrophysical safety bounds derived from the survival of white dwarfs and neutron stars. Their reply argues that no such gap exists: the physics that would let a black hole accrete and radiate at Eddington-limited rates on Earth is the same physics that governs black holes produced by cosmic rays striking compact stars, where matter is enormously denser. Any black hole capable of the accretion Plaga's scenario requires would therefore be produced on, trapped inside, and grow faster within white dwarfs and neutron stars, and the observed survival of such stars for billions of years excludes the dangerous parameter range. The reasoning rests on the well-established legs of the compact-star bound, namely that cosmic rays reaching collider energies strike compact stars, that black holes produced there are stopped in the dense stellar material, and that old white dwarfs and neutron stars are observed to survive. The genuinely disputed step is the bridge: that accretion hazardous on Earth timescales entails even faster accretion inside a compact star, leaving no window in which a black hole is dangerous here but invisible there. Plaga maintained in revised versions of his paper that his metastable black holes would leave no signature in existing astrophysical observations, so the bounds would not reach them. The mainstream physics community accepted the Giddings and Mangano analysis, which extended their peer-reviewed safety study published in Physical Review D; Plaga's paper remained an unpublished preprint and his counterargument attracted no independent technical support. More than a decade of LHC operation at and beyond the relevant energies without incident is consistent with the safety conclusion, though it does not directly test this specific theoretical step. The claim stands as the accepted resolution of the metastable loophole, resting on theoretical analysis of hypothetical objects rather than direct measurement, with dissent confined to the scenario's original proponent.
Claim entered the graph