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Keyword and entity retrieval over indexed evidence, hypotheses, and claims. Nothing is answered from model memory on this page. For a scored percentage with the working shown, open Fact or Fiction.
Topic remit
Day of
Engineering
Facilitation
Intelligence & process
Foreknowledge
Independent cluster
Entities
- Omar al-Bayoumi
- Fahad al-Thumairy
- Caysan Bin Don
- Osama Bassnan
- Mohamed Atta
- Norman Mineta
- Dick Cheney
- Kenneth Williams
- Richard Gage
- Steven E. Jones
- Niels H. Harrit
- J. Leroy Hulsey
- Barry Jennings
- William Rodriguez
- George W. Bush
- David Ray Griffin
- David Chandler
- Ted Walter
- Tony Szamboti
- Kevin R. Ryan
- Piers Robinson
- Natalie Schilling
- Jonathan H. Cole
- Philip Zelikow
- Søren Roest Korsgaard
- Lorie Van Auken
- Bob McIlvaine
- Peter Dale Scott
- Paul Zarembka
- Barbara Honegger
- Kristina Claunch
- Peter Bearman
- Barbara Elias-Sanborn
- Richard A. Clarke
- Sajit Gandhi
- Michael Horrocks
- Thomas W. Eagar
- Christopher Musso
Matching hypotheses
- H009Relevant intelligence was withheld from the 9/11 CommissionScore
- H012Unusual pre-attack put-option activity reflected advance knowledge of the attacksScore
- H015Able Danger identified Atta's cell before 9/11 and was blocked from warning the FBIScore
- H016Urban Moving Systems detainees had organisational advance knowledge of the attacksScore
- H021The 9/11 Commission was structurally prevented from being a truth-seeking enquiryScore
Matching claims
- partially_supportedCLM-003
Omar al-Bayoumi was a paid cooptee of Saudi GIP reporting via Ambassador Bandar.
- indeterminateCLM-008
Bayoumi had advance knowledge that the 9/11 attacks would occur.
- well_supportedCLM-009
The FBI withheld Bayoumi-related intelligence from the 9/11 Commission.
- 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.
- indeterminateCLM-021
Unusual pre-attack put-option activity reflected trading by people with advance knowledge of the plot.
- unverifiedCLM-022
The five Urban Moving Systems detainees had advance knowledge of the attacks as an Israeli intelligence team.
- contradictedCLM-025
Some of the named 19 hijackers were not aboard the aircraft / were still alive.
- 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-031
The 9/11 Commission was not a truth-seeking body; the Report is a 'Zelikow Report' defined by systematic omissions.
- disputedCLM-033
First-responder explosion-language about the Twin Towers is evidence of demolition charges.
- unverifiedCLM-034
Reported 9/11 aircraft manoeuvres were not flyable manually by the named hijacker-pilots (automation/remote guidance).
- disputedCLM-036
The Pentagon attack involved inside-the-building explosives before AA77's official impact.
- 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.
- well_supportedCLM-042
About three-quarters of CIA materials cited by the 9/11 Commission, including all KSM interrogation reports, remained withheld as of the 2012 File posting.
Evidence supporting
64MacQueen — 118 Witnesses: Firefighters' testimony to explosions (Journal of 9/11 Studies, Aug 2006)
Journal of 9/11 Studies · 2006-08-01
In 2006 MacQueen published a compilation of 118 firefighter explosion-language statements drawn from FDNY oral histories.
Peter Dale Scott — 9/11 Commission deception, Cheney's actions, why he should testify under oath (Feb 2007)
Journal of 9/11 Studies · 2007-02-01
Scott published a 2007 process paper on Commission deception and Cheney's 9/11 actions, later expanded as Toronto ch.5.
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.
Eric Salter — Critical review of WTC 'no plane' theories (Sep 2006)
Journal of 9/11 Studies · 2006-09-01
The journal published a 2006 critical review of no-plane theories for the WTC.
Korsgaard — Preliminary study of flashes during South Tower collapse (May 2024)
Journal of 9/11 Studies · 2024-05-01
A 2024 preliminary paper reports flashes of light in South Tower collapse footage.
Paul Zarembka — Insider trading before 9/11 re-examined (Toronto Report ch.6)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
A 2012 hearing paper surveys three academic option-market studies and argues the combined pre-attack activity is not plausibly random, while treating UAL/AMR themselves as weak because of hedging.
Evidence contradicting
16Legge & Stutt — AA77 FDR analysis supports official Pentagon flight path (Jan 2011)
Journal of 9/11 Studies · 2011-01-01
A 2011 Journal of 9/11 Studies FDR analysis concludes the official AA77 path to Pentagon impact is supported.
John D. Wyndham — Problems with theories alternative to large-plane impact at the Pentagon (Nov 2011)
Journal of 9/11 Studies · 2011-11-01
The Journal of 9/11 Studies published a 2011 paper arguing that theories alternative to a large-plane Pentagon impact have problems.
Jonathan Cole — Discussion of Le & Bažant spontaneous-collapse paper (Jul 2023)
Journal of 9/11 Studies · 2023-07-01
An ASCE member published a 2023 discussion challenging Le & Bažant's spontaneous-collapse treatment of the towers.
UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
Commission staff: Able Danger Atta identification not substantiated
9/11 Commission Report · 2005-08-12
Commission staff published that they could not substantiate a pre-9/11 Able Danger identification of Atta.
Ambiguous
80Journal 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.
MacQueen & Szamboti — The Missing Jolt (Apr 2009)
Journal of 9/11 Studies · 2009-04-01
MacQueen and Szamboti (2009) argue that a predicted deceleration jolt at collapse initiation is absent in the tower videos.
Robinson & Ryan — 9/11 and COVID-19 as structural deep events (Sep 2024)
Journal of 9/11 Studies · 2024-09-01
In 2024 IC911's journal published a paper treating 9/11 and COVID-19 as comparable structural deep events.
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.
David Chandler — Descent and tilting of the North Tower antenna (Mar 2025)
Journal of 9/11 Studies · 2025-03-01
Chandler published a March 2025 video-measurement paper on North Tower antenna descent and tilt.
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.
Contemporary reports
74Here Is New York — 'A Democracy of Photographs' collection
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-11
A large open-submission photographic exhibition of 11 September and its aftermath exists and is mirrored in the Digital Archive.
UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
CIA IG August 2001: CTC practices reviewed positively — vs later OIG/Commission
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-01
NSArchive records that a CIA Inspector General review completed in August 2001 praised CTC information-management and FBI cooperation, in contrast to the 2004 CIA OIG and the Commission.
NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
Arlington County After Action Report on 9/11 (Pentagon response) — 911DA pointer
September 11 Digital Archive (RRCHNM / ASHP) · 2002-01-01
The Digital Archive holds a copy of Arlington County's 9/11 After Action Report as a first-responder collection item.
Commission character assessment of Bayoumi
9/11 Commission Report · 2004-07-22
The 2004 Commission published a negative finding on Bayoumi's knowing extremist involvement.
Later recollections / analysis
86Journal 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.
MacQueen — 118 Witnesses: Firefighters' testimony to explosions (Journal of 9/11 Studies, Aug 2006)
Journal of 9/11 Studies · 2006-08-01
In 2006 MacQueen published a compilation of 118 firefighter explosion-language statements drawn from FDNY oral histories.
Legge & Stutt — AA77 FDR analysis supports official Pentagon flight path (Jan 2011)
Journal of 9/11 Studies · 2011-01-01
A 2011 Journal of 9/11 Studies FDR analysis concludes the official AA77 path to Pentagon impact is supported.
Peter Dale Scott — 9/11 Commission deception, Cheney's actions, why he should testify under oath (Feb 2007)
Journal of 9/11 Studies · 2007-02-01
Scott published a 2007 process paper on Commission deception and Cheney's 9/11 actions, later expanded as Toronto ch.5.
MacQueen & Szamboti — The Missing Jolt (Apr 2009)
Journal of 9/11 Studies · 2009-04-01
MacQueen and Szamboti (2009) argue that a predicted deceleration jolt at collapse initiation is absent in the tower videos.
John D. Wyndham — Problems with theories alternative to large-plane impact at the Pentagon (Nov 2011)
Journal of 9/11 Studies · 2011-11-01
The Journal of 9/11 Studies published a 2011 paper arguing that theories alternative to a large-plane Pentagon impact have problems.
Official documents
78NTSB 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.
UA93 ACARS 09:23 and 09:28 mayday — NSAEBB 196 quotation
NTSB flight-path studies and ATC transcripts released via NSArchive (NSAEBB 196) · 2001-09-11
NTSB ACARS/ATC text quoted by NSArchive: UA93 received a 09:23 warning about cockpit intrusion and the NY impacts, then at 09:28 transmitted a mayday / 'hey get out of here' as it was hijacked.
CIA 9/11 File posting — 100+ FOIA documents, 19 June 2012
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2012-06-19
In 2012 the National Security Archive posted 100+ CIA documents cited in Commission footnotes, and stated that this was about one-quarter of the CIA material the Commission cited, with KSM interrogation reports still withheld.
CIA IG August 2001: CTC practices reviewed positively — vs later OIG/Commission
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-01
NSArchive records that a CIA Inspector General review completed in August 2001 praised CTC information-management and FBI cooperation, in contrast to the 2004 CIA OIG and the Commission.
NTSB flight-path study: AA77 from Dulles to the Pentagon
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2002-02-19
NTSB reconstructed a continuous radar/path track of AA77 from takeoff to the Pentagon.
Arlington County After Action Report on 9/11 (Pentagon response) — 911DA pointer
September 11 Digital Archive (RRCHNM / ASHP) · 2002-01-01
The Digital Archive holds a copy of Arlington County's 9/11 After Action Report as a first-responder collection item.
Independent / media
55Journal 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.
MacQueen — 118 Witnesses: Firefighters' testimony to explosions (Journal of 9/11 Studies, Aug 2006)
Journal of 9/11 Studies · 2006-08-01
In 2006 MacQueen published a compilation of 118 firefighter explosion-language statements drawn from FDNY oral histories.
Legge & Stutt — AA77 FDR analysis supports official Pentagon flight path (Jan 2011)
Journal of 9/11 Studies · 2011-01-01
A 2011 Journal of 9/11 Studies FDR analysis concludes the official AA77 path to Pentagon impact is supported.
Peter Dale Scott — 9/11 Commission deception, Cheney's actions, why he should testify under oath (Feb 2007)
Journal of 9/11 Studies · 2007-02-01
Scott published a 2007 process paper on Commission deception and Cheney's 9/11 actions, later expanded as Toronto ch.5.
MacQueen & Szamboti — The Missing Jolt (Apr 2009)
Journal of 9/11 Studies · 2009-04-01
MacQueen and Szamboti (2009) argue that a predicted deceleration jolt at collapse initiation is absent in the tower videos.
John D. Wyndham — Problems with theories alternative to large-plane impact at the Pentagon (Nov 2011)
Journal of 9/11 Studies · 2011-11-01
The Journal of 9/11 Studies published a 2011 paper arguing that theories alternative to a large-plane Pentagon impact have problems.
Unresolved contradictions
- CTR-011Put options: unusual volume vs no plot-participant profits
- CTR-017WTC 7 Stage 1: NIST gradual vs Chandler instantaneous whole-roofline free fall
- CTR-019IC911 journal vs IC911 journal on the Pentagon object
- CTR-022NTSB public-docket refusal vs NSArchive FOIA release of the same path/ATC files