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
Popular Mechanics — 9/11: Debunking the Myths (March 2005) and Debunking 9/11 Myths (Hearst, 2006)
63%
More than 50% — weakly supported by the sources
The score is 63% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 63% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.66 (from −1 contradict to +1 support). Uncertainty is 62%. So 50% + 50% × 0.66 × 38% remaining certainty = 63%.
Supporting sources
21
Weighted strength 4.99
Contradicting sources
6
Weighted strength 1.02
No stance yet
35
Pulls the score toward 50% · 9.55
Uncertainty
62%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.66 × (1 − 0.62) = 0.625
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: H007 — Saudi-linked individuals knowingly facilitated Nawaf al-Hazmi and Khalid al-Mihdhar. Yes/no labels are taken from sources already linked to that question. Also close: H015, H021, H004.
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, 15 from claims, 0 labelled automatically (capped, marked, not saved as human review), 30 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 4.99, contradict strength 1.02, no-stance strength 9.55. 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 × 0.66 × (1 − 0.62) = 0.625.
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
- 12 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 4 source(s) are unverified, inactive, or recorded as not retrieved. A missing file is a gap, not a finding against the question.
- 35 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 (H015) also matches this wording. The percentage below is for H007 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H007 · Saudi-linked individuals knowingly facilitated Nawaf al-Hazmi and Khalid al-Mihdharfacilitation · match 5.4
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-013
Aircraft impact and the ensuing fires initiated the collapses of WTC 1 and WTC 2 without additional energetic devices.
- disputedCLM-035
A small CIA Alec Station group intentionally withheld Mihdhar/Hazmi information from the FBI, and the purpose became to allow the attacks.
- well_supportedCLM-009
The FBI withheld Bayoumi-related intelligence from the 9/11 Commission.
- disputedCLM-031
The 9/11 Commission was not a truth-seeking body; the Report is a 'Zelikow Report' defined by systematic omissions.
- verifiedCLM-037
A large born-digital public archive of 11 September emails, stories, and images exists and was acquired by the Library of Congress in 2003.
- verifiedCLM-040
NTSB produced flight-path studies and ATC transcripts for the four hijacked flights and initially refused a public docket.
Sources that support this
21Piers 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 H007 (seeded): Robinson cites Ashton v KSA and Klarenberg CIA-Saudi recruiting — secondary to Phase 1 primaries.
Peter Dale Scott — 9/11 as a deep event: CIA personnel helped allow it (Toronto Report ch.5)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Scott's 2012 chapter restates a documented CIA-to-FBI withholding pattern around Mihdhar and Hazmi (Malaysia 2000, visa, watchlisting) attributed to a small Alec Station group, and adds a Saudi-GID liaison hypothesis plus an 'allowed to proceed' inference.
hypothesis link · human_seed link to H007 (seeded): Scott's GID-liaison reading is a Saudi-tasking compatible explanation of the withholding. Interpretation.
David Ray Griffin — Anomalies in the 9/11 Commission Report (Toronto Report ch.2)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists Commission process constraints (Zelikow, funding, access) and twelve claimed omissions, with footnotes to named books, newspapers, and the Report itself.
claim stance · Inherited from matching claim CLM-031.
NIST NCSTAR 1: impact plus fire initiated collapse of WTC 1 and WTC 2
NIST NCSTAR 1 — Final Report on the Collapse of the World Trade Center Towers (2005) · 2005-09-01
NIST published a fire-and-impact initiation sequence for WTC 1 and WTC 2 in 2005.
claim stance · Inherited from matching claim CLM-013.
NTSB path studies and ATC transcripts FOIA'd by NSArchive (Aug 2006)
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2006-08-11
In August 2006 NTSB released to the National Security Archive the four-flight ATC transcripts, three path studies, and the UA93 DFDR specialist report, after refusing to open its own public docket.
claim stance · Inherited from matching claim CLM-040.
FBI 2017: Bayoumi paid as GIP cooptee via Ambassador Bandar
FBI materials released under Executive Order 14040 · 2017-06-14
An official FBI analytical document asserts Bayoumi was a paid GIP cooptee through Bandar, 1998–2001.
hypothesis link · human_seed link to H007 (seeded): GIP cooptee status makes tasked assistance more plausible.
Mineta: Cheney asked if 'the orders still stand' as an aircraft approached
Norman Mineta testimony, 9/11 Commission hearing, 23 May 2003 · 2003-05-23
Norman Mineta testified that Cheney confirmed standing orders while being updated on an inbound aircraft's decreasing range.
claim stance · Inherited from matching claim CLM-031.
Sources that contradict this
6Commission character assessment of Bayoumi
9/11 Commission Report · 2004-07-22
The 2004 Commission published a negative finding on Bayoumi's knowing extremist involvement.
hypothesis link · human_seed link to H007 (seeded): 2004 Commission negative finding. Dated; still part of the record.
Commission: Bayoumi did not give them money beyond the reimbursed check
9/11 Commission Report · 2004-07-22
Commission found no continuing financial transfers from Bayoumi to the two men.
hypothesis link · human_seed link to H007 (seeded): No continuing money from Bayoumi weakens a paymaster version of facilitation.
KSM: operatives told to pose as students and seek mosque help
9/11 Commission Report · 2004-07-22
The Commission records a KSM claim that the two were instructed to seek mosque assistance and that AQ had no California agents.
hypothesis link · human_seed link to H007 (seeded): KSM's no-California-agents claim, if credited, cuts against a Saudi-AQ joint facilitation cell.
Commission: no evidence Thumairy assisted the two operatives
9/11 Commission Report · 2004-07-22
2004 Commission published a negative finding on Thumairy assistance.
hypothesis link · human_seed link to H007 (seeded): Commission found no Thumairy assistance — a named Saudi official in the hypothesized network.
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.
claim stance · Inherited from matching claim CLM-013.
FDNY oral histories: multiple firefighters report explosions
New York Fire Department oral histories (released 2005 after lawsuit) · 2005-08-12
Multiple trained first responders independently described explosion-like events at the WTC site on 11 September 2001.
claim stance · Inherited from matching claim CLM-013.
Sources with no stance yet
35CIA CTC 2003-40044HC — '11 September: The Plot and the Plotters'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2003-06-01
A 1 June 2003 CIA CTC report titled 11 September: The Plot and the Plotters exists, is a major Commission source, and includes the analytical claim that the Saudi composition of the teams had political as well as visa-access value.
hypothesis link · human_seed link to H007 (seeded): 2003 CTC 'Saudi nationals as message' is plot-composition analysis, not Bayoumi tasking.
FBI analytical statement: 50/50 chance Bayoumi had advance knowledge
FBI materials released under Executive Order 14040 · 2017-06-14
An FBI analytical product assigned even odds to Bayoumi's advance knowledge of the attacks.
hypothesis link · human_seed link to H007 (seeded): 50/50 advance-knowledge language is not directional.
Tertiary blog repeating Commission language via a book via a news story
Composite tertiary web commentary (circular-sourcing demonstration) · 2011-09-11
A 2011 web post restates the Bayoumi story without a new primary document.
hypothesis link · zeros: contemporaneity, corroboration, chain_of_custody · human_seed link to H007 (seeded): Circular tertiary repetition. No weight.
Quality zeros remain visible: contemporaneity, corroboration, chain_of_custody.
Alleged ISI / Mahmoud Ahmad / Saeed Sheikh wire to Atta
Reporting on Lt. Gen. Mahmoud Ahmad, ISI, and alleged Atta funding via Saeed Sheikh · 2001-10-01
Ahmad was in Washington on 9/11; press alleged an ISI-linked transfer to Atta that is not confirmed by a public U.S. primary in this lab.
hypothesis link · zeros: corroboration, chain_of_custody · human_seed link to H007 (seeded): ISI-Atta wire, if it existed, is a different state channel than the Saudi San Diego question.
Quality zeros remain visible: corroboration, chain_of_custody.
IC911 Research Agenda, January 2024
IC911 Research Agenda (January 2024) · 2024-01-01
IC911's January 2024 agenda treats WTC destruction, remote guidance, air-defence failure, Saudi civil litigation, and insider trading as open research streams.
hypothesis link · zeros: contemporaneity · human_seed link to H007 (seeded): Research agenda lists Saudi litigation as a workstream, not a finding.
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.
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.
Journal of 9/11 Studies — full article catalog (2006–2025)
Journal of 9/11 Studies · 2026-09-02
IC911 hosts a journal catalog of 70+ items. Several flight papers (Wyndham 2011, Legge & Stutt 2011, Salter 2006) argue against no-plane / no-Boeing theories.
unclassified · zeros: contemporaneity · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: contemporaneity.
Topics
Day-of events, engineering questions, process failures, and foreknowledge leads.