Fact or Fiction
Fact or Fiction
Ask any question, including odd ones. You get a percentage, a clear call of more or less than 50%, the working, and the sources that produced it. If nothing matches, the score stays at 50% — nothing is invented.
Likelihood
H006 Explosives contributed to WTC7 failure
61%
More than 50% — weakly supported by the sources
The score is 61% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 61% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.62 (from −1 contradict to +1 support). Uncertainty is 64%. So 50% + 50% × 0.62 × 36% remaining certainty = 61%.
Supporting sources
18
Weighted strength 3.52
Contradicting sources
3
Weighted strength 0.81
No stance yet
27
Pulls the score toward 50% · 7.41
Uncertainty
64%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.62 × (1 − 0.64) = 0.612
This percentage is calculated from the sources listed below — it is a score, not a court finding. Official origin does not add extra weight. Independent origin does not subtract weight. Two papers from the same group are one cluster, not two independent confirmations.
Reasoning
Step 1 · Match the question
Closest stored question: H006 — Explosives contributed to WTC7 failure. Yes/no labels are taken from sources already linked to that question. Also close: H018, H004, H005.
Step 2 · Find matching sources
40 source(s) matched the wording. 17 further source(s) already linked to the stored question were included even if they did not contain the search words. 6 matching claim(s) contributed inherited stances.
Step 3 · Assign support or contradiction without inventing
17 labelled from stored question links, 7 from claims, 0 labelled automatically (capped, marked, not saved as human review), 24 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 3.52, contradict strength 0.81, no-stance strength 7.41. A zero on chain of custody still lowers the mean and stays visible.
Step 5 · Turn that into a percentage
Start at 50%. Move up if support outweighs contradiction, down if the reverse. Unlabelled sources shrink the movement, so a thin file stays near 50%. Working: 0.5 + 0.5 × 0.62 × (1 − 0.64) = 0.612.
Step 6 · What this number is not
This percentage is calculated from the sources listed below — it is a score, not a court finding. Official origin does not add extra weight. Independent origin does not subtract weight. Two papers from the same group are one cluster, not two independent confirmations.
What is still missing
- 9 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 5 source(s) are unverified, inactive, or recorded as not retrieved. A missing file is a gap, not a finding against the question.
- 27 relevant source(s) have no stance yet. They increase uncertainty and pull the percentage toward 50%; they are not counted as support or contradiction.
- A second stored question (H018) also matches this wording. The percentage below is for H006 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H006 · Explosives contributed to WTC7 failureengineering · match 38.6
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-016
Explosives or other additional energetic mechanisms contributed to WTC 7's failure.
- disputedCLM-030
WTC 7's entire measurable north and west rooflines instantaneously transitioned to free fall, a behaviour NIST's Stage 1 description conceals.
- disputedCLM-033
First-responder explosion-language about the Twin Towers is evidence of demolition charges.
- verifiedCLM-007
U.S. agencies had actionable information on Mihdhar's U.S. visa in January 2000 and failed to watchlist him until August 2001.
- disputedCLM-013
Aircraft impact and the ensuing fires initiated the collapses of WTC 1 and WTC 2 without additional energetic devices.
- disputedCLM-015
WTC 7 collapsed from ordinary office fires following debris impact, without explosives.
Sources that support this
18NIST FAQ: WTC 7 north face had a 2.25-second free-fall stage
NIST WTC investigation FAQs (towers and WTC 7) · 2019-11-20
NIST measured a 2.25-second free-fall stage of WTC 7's north face and described negligible support from the structure below.
hypothesis link · human_seed link to H006 (seeded): 2.25 s free fall with 'negligible support from the structure below.'
Harrit et al. 2009: active thermitic red/gray chips in WTC dust
Harrit, Farrer, Jones, Ryan et al., The Open Chemical Physics Journal 2:7–31 (2009) · 2009-04-03
A 2009 peer-reviewed paper reports energetic red/gray chips in WTC dust that the authors identify as unreacted thermitic material.
hypothesis link · human_seed link to H006 (seeded): Thermitic chips, if correctly identified, are a candidate energetic.
Hulsey et al. (UAF): fire did not cause the observed collapse of WTC 7
Hulsey, Quan, Xiao — University of Alaska Fairbanks WTC 7 study (2019–2020) · 2020-03-01
A University of Alaska Fairbanks team published a model concluding fire did not cause WTC 7's observed collapse.
hypothesis link · human_seed link to H006 (seeded): UAF model: only near-simultaneous column failure matches observation.
Piers Robinson — Researching 9/11 and Beyond: Current Knowledge and Future Directions (Aug 2024)
Journal of 9/11 Studies · 2024-08-01
Robinson's 2024 survey cites Harrit 2009, Hulsey 2020, MacQueen eyewitness counts, NIST NCSTAR, the Commission, Ashton v KSA, and a 2023 Klarenberg claim of a CIA-Saudi recruiting operation involving two hijackers. He states official investigations are flawed and demolition of WTC 1/2/7 is most likely.
hypothesis link · human_seed link to H006 (seeded): Robinson 2024 survey treats demolition of 1/2/7 as most likely. Secondary.
Barry Jennings and Michael Hess: explosions and being trapped in WTC 7
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001) · 2001-09-11
Jennings and Hess were trapped in WTC 7 and described explosion-like events and delayed rescue.
hypothesis link · human_seed link to H006 (seeded): Jennings/Hess explosion-in-WTC7 accounts; clock time disputed.
DOJ OIG: FBI handling of Hazmi/Mihdhar intelligence
DOJ Office of Inspector General review of FBI handling of 9/11-related intelligence · 2004-11-01
An oversight body found FBI process failures regarding the two hijackers already in the United States.
claim stance · Inherited from matching claim CLM-007.
Chandler, Walter, Szamboti — Instantaneous free fall of WTC 7 and NIST's attempt to hide it (Jun 2023)
Journal of 9/11 Studies · 2023-06-01
Using multi-point tracking, Chandler/Walter/Szamboti report that after ~1.4 s of near-immobility of most of the north and west rooflines, those rooflines entered free fall together within ~0.2 s at ~8.0–8.2 s after east-penthouse collapse, ~9.8 m/s² for ~2.5 s.
hypothesis link · human_seed link to H006 (seeded): Multi-point free-fall onset is the authors' kinematic support for simultaneous support removal.
David Chandler — WTC 7: A refutation of NIST's analysis (Toronto Report ch.9)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Chandler's 2012 hearing paper treats NIST's own Stage 2 free-fall interval as established and argues the 5.4 s overall figure is an artefact of start-time choice.
hypothesis link · human_seed link to H006 (seeded): 2012 Chandler free-fall argument, precursor to 2023.
Sources that contradict this
3NIST: no corroborating evidence for explosives or thermite
NIST WTC investigation FAQs (towers and WTC 7) · 2019-11-20
NIST published a negative finding on explosives and thermite as collapse causes.
hypothesis link · human_seed link to H006 (seeded): NIST no-explosives finding.
NIST NCSTAR 1A: WTC 7 collapse initiated by fire-induced buckling of Column 79
NIST NCSTAR 1A — Final Report on the Collapse of World Trade Center Building 7 (2008) · 2008-11-20
NIST attributes WTC 7's collapse to fire-induced failure beginning at Column 79, with global collapse at 17:20.
hypothesis link · human_seed link to H006 (seeded): NIST fire-only probable sequence.
NIST / critics: red/gray chips consistent with primer paint, not thermite
NIST WTC investigation FAQs (towers and WTC 7) · 2019-11-20
NIST and subsequent paint-chemistry arguments attribute the red chips to known coatings rather than explosives.
hypothesis link · human_seed link to H006 (seeded): Paint rebuttal of the chips.
Sources with no stance yet
27IC911 presentations catalogue (2023–2026)
International Center for 9/11 Justice · 2026-09-02
IC911 lists seven presentations 2023–2026 on flight simulation, seismic claims, hijacking, air defence, the North Tower spire, and WTC 7 free fall.
hypothesis link · zeros: contemporaneity · human_seed link to H006 (seeded): Presentations catalogue. Weight lives in the cited papers, not the slide list.
Quality zeros remain visible: contemporaneity.
Larry Silverstein, PBS 2002: 'maybe the smartest thing to do is pull it'
PBS — America Rebuilds: A Day with Larry Silverstein (2002) · 2002-09-10
The leaseholder said on camera that he suggested they 'pull it' regarding WTC 7 and that a decision to pull preceded the collapse they watched.
hypothesis link · human_seed link to H006 (seeded): 'Pull it' is about an order, not a chemical identification.
IC911 Data Archive — links inactive at ingest
International Center for 9/11 Justice · 2026-09-02
As of 2 September 2026 the IC911 data-archive page states that archive links are inactive and that a large archive of videos, photographs, and documents is being built.
hypothesis link · zeros: contemporaneity, corroboration, chain_of_custody · human_seed link to H006 (seeded): Inactive archive. Zero weight.
Quality zeros remain visible: contemporaneity, corroboration, chain_of_custody.
Wikipedia sub-articles: WTC demolition theories, advance knowledge, 9/11 truth movement
Wikipedia — 9/11 conspiracy theories (encyclopedia article) · 2026-09-03
Wikipedia's demolition, advance-knowledge, and truth-movement pages repeat named sources already on this board; they did not add a new primary measurement.
unclassified · zeros: contemporaneity · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: contemporaneity.
Popular Mechanics 2005/2006: magazine investigation rejecting demolition, Pentagon-missile, and UA93 shoot-down claims
Popular Mechanics — 9/11: Debunking the Myths (March 2005) and Debunking 9/11 Myths (Hearst, 2006) · 2005-03-01
In 2005–2006 Popular Mechanics published a magazine investigation and a book arguing that the main demolition, missile, and shoot-down claims do not stand up to wreckage and engineering testimony.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Gage, Roberts, Dreger — Advanced pyrotechnic/explosive material in WTC dust (Toronto Report ch.12)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Toronto ch.12 restates the 2009 Harrit red/gray-chip paper as forensic evidence against the official destruction account.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Wikipedia, 9/11 conspiracy theories — article as finding aid (retrieved 3 Sep 2026)
Wikipedia — 9/11 conspiracy theories (encyclopedia article) · 2026-09-03
On 3 September 2026 the Wikipedia article listed the main 9/11 conspiracy-theory families and pointed at Commission, NIST, State Department, Eagar, and Popular Mechanics as external sources.
unclassified · zeros: contemporaneity · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: contemporaneity.
Kevin R. Ryan — Why the NIST World Trade Center Reports are False (Toronto Report ch.3)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Ryan cites NIST test and model figures (steel temperatures, sag, expansion, fire duration) and states they do not support the published collapse sequences; he notes NIST did not release its global models for independent runs.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Topics
Day-of events, engineering questions, process failures, and foreknowledge leads.