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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
- Nawaf al-Hazmi
- Khalid al-Mihdhar
- Fahad al-Thumairy
- Anwar al-Awlaki
- Caysan Bin Don
- Prince Bandar bin Sultan
- Abdussattar Shaikh
- Khalid Sheikh Mohammed
- Osama Bassnan
- Hani Hanjour
- Holly Ratchford
- Thomas Kean
- Mohamed Atta
- Ziad Jarrah
- Larry Silverstein
- Norman Mineta
- Dick Cheney
- Anthony Shaffer
- Kenneth Williams
- Zacarias Moussaoui
- Steven E. Jones
- Niels H. Harrit
- J. Leroy Hulsey
- Judy Wood
- William Rodriguez
- Jane Standley
- Sivaraj Shyam-Sunder
- John Farmer
- Mahmoud Ahmad
- George W. Bush
- David Ray Griffin
- Ted Walter
- Kevin R. Ryan
- Piers Robinson
- Jonathan H. Cole
- Philip Zelikow
- James Gourley
- Bob McIlvaine
- Peter Dale Scott
- Paul Zarembka
- Barbara Honegger
- Kristina Claunch
- Mary Marshall Clark
- Peter Bearman
- Barbara Elias-Sanborn
- Richard A. Clarke
- Michael F. Scheuer
- Sajit Gandhi
- Michael Horrocks
- Thomas W. Eagar
- Christopher Musso
Matching hypotheses
- H008U.S. agencies possessed actionable pre-attack intelligence on these two operativesScore
- H009Relevant intelligence was withheld from the 9/11 CommissionScore
- H012Unusual pre-attack put-option activity reflected advance knowledge of the attacksScore
- H013UA93 was shot down rather than crashed solely by a passenger revoltScore
- H014The Pentagon was not struck by AA77 (missile or other object)Score
- 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
- H017Directed energy, not impact/fire/conventional explosives, destroyed the twin towersScore
- H020Specific pre-attack warnings (Odigo and similar) show that some non-plot actors knew the morning's targetingScore
- H021The 9/11 Commission was structurally prevented from being a truth-seeking enquiryScore
Matching claims
- disputedCLM-002
The 1 February 2000 restaurant meeting was a chance encounter.
- contradictedCLM-005
Fahad al-Thumairy provided no assistance to the two operatives.
- 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-014
Unreacted thermitic material was present in WTC dust.
- disputedCLM-016
Explosives or other additional energetic mechanisms contributed to WTC 7's failure.
- disputedCLM-017
Larry Silverstein ordered WTC 7 pulled in the demolition-slang sense.
- disputedCLM-018
UA93 was shot down by U.S. military rather than crashed by a passenger counterattack.
- contradictedCLM-019
The Pentagon was not struck by AA77.
- disputedCLM-020
Able Danger identified Mohamed Atta's cell before 11 September and was blocked from notifying the FBI.
- 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.
- unsupportedCLM-023
The twin towers were destroyed by directed energy, not by impact, fire, or conventional explosives.
- contradictedCLM-025
Some of the named 19 hijackers were not aboard the aircraft / were still alive.
- partially_supportedCLM-026
NORAD/FAA war-games and false timelines indicate the air-defence failure was more than accident.
- disputedCLM-031
The 9/11 Commission was not a truth-seeking body; the Report is a 'Zelikow Report' defined by systematic omissions.
- disputedCLM-032
NIST NCSTAR reports on the WTC are false as engineering explanations.
- 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-035
A small CIA Alec Station group intentionally withheld Mihdhar/Hazmi information from the FBI, and the purpose became to allow the attacks.
- 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.
- well_supportedCLM-038
Street-level witnesses in lower Manhattan saw/heard a second aircraft hit the South Tower.
- well_supportedCLM-039
CIA senior products in summer 2001 described Bin Ladin attacks as imminent, including a strike in the US, without time/place/target.
- verifiedCLM-040
NTSB produced flight-path studies and ATC transcripts for the four hijacked flights and initially refused a public docket.
- partially_supportedCLM-041
The U.S. pressed the Taliban to expel bin Laden more than 30 times, with only three approaches in the first Bush year.
- 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
65CIA 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 SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
Taliban File update: U.S. pressed Taliban to expel UBL over 30 times
The Taliban File (NSAEBB 97) and updates · 2004-01-30
The National Security Archive's Taliban File update states the U.S. pressed the Taliban to expel bin Laden over 30 times, with only three approaches in the first Bush year.
Predator over Afghanistan, autumn 2000: likely UBL, no shoot capability
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
CIA notes in the 2012 File say an unarmed Predator twice observed a person most likely to be bin Laden in autumn 2000 and could not act.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
April 2000: CTC/UBL to move from offensive to defensive for budget reasons
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2000-04-05
A 5 April 2000 CIA note says the bin Laden unit would move from offensive to defensive posture because a counterterrorism supplemental was still stuck at NSC-OMB.
Evidence contradicting
16UA93 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.
Bažant pancake model vs NIST initiation sequence
Bažant et al. — pancake / progressive-collapse papers on the WTC towers · 2002-01-01
Published official-adjacent models disagree on pancake vs bowing-column initiation of the tower collapses.
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.
ASCE Pentagon building performance: 757-class impact damage
ASCE/SEI Pentagon Building Performance Report (2003) · 2003-01-01
An engineering team mapped interior damage consistent with a large-aircraft mass trajectory through the Pentagon.
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.
Commission: no evidence Thumairy assisted the two operatives
9/11 Commission Report · 2004-07-22
2004 Commission published a negative finding on Thumairy assistance.
Ambiguous
79The Osama Bin Laden File (NSAEBB 343), posted 2 May 2011
The Osama Bin Laden File (NSAEBB 343) · 2011-05-02
On the day of bin Laden's death the National Security Archive posted an Osama Bin Laden File that is an index of prior FOIA briefing books on UBL, Pakistan, and the Taliban.
CIA 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.
September 11th Sourcebooks index (NSArchive volumes I–VII and updates)
National Security Archive — September 11th Sourcebooks · 2026-09-03
The National Security Archive organised a September 11th Sourcebook series of at least seven volumes plus later FOIA postings on Clarke, FAA, and NTSB transcripts.
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.
Joint Inquiry discussion of Osama Bassnan and alleged Saudi payments
Joint Inquiry into Intelligence Community Activities Before and After 9/11 (including Part Four, declassified 2016) · 2016-07-15
A congressional inquiry recorded alleged Bassnan–Saudi official financial ties in the same city as the hijackers.
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.
Contemporary reports
75CIA SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
Taliban File update: U.S. pressed Taliban to expel UBL over 30 times
The Taliban File (NSAEBB 97) and updates · 2004-01-30
The National Security Archive's Taliban File update states the U.S. pressed the Taliban to expel bin Laden over 30 times, with only three approaches in the first Bush year.
Predator over Afghanistan, autumn 2000: likely UBL, no shoot capability
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
CIA notes in the 2012 File say an unarmed Predator twice observed a person most likely to be bin Laden in autumn 2000 and could not act.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
April 2000: CTC/UBL to move from offensive to defensive for budget reasons
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2000-04-05
A 5 April 2000 CIA note says the bin Laden unit would move from offensive to defensive posture because a counterterrorism supplemental was still stuck at NSC-OMB.
Phoenix memo, 10 July 2001: bin Laden students at U.S. aviation schools
FBI Phoenix Electronic Communication, 10 July 2001 (Kenneth Williams) · 2001-07-10
An FBI agent documented a bin Laden–flight-school hypothesis in July 2001 that was not actioned nationally before the attacks.
Later recollections / analysis
85The Osama Bin Laden File (NSAEBB 343), posted 2 May 2011
The Osama Bin Laden File (NSAEBB 343) · 2011-05-02
On the day of bin Laden's death the National Security Archive posted an Osama Bin Laden File that is an index of prior FOIA briefing books on UBL, Pakistan, and the Taliban.
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.
September 11th Sourcebooks index (NSArchive volumes I–VII and updates)
National Security Archive — September 11th Sourcebooks · 2026-09-03
The National Security Archive organised a September 11th Sourcebook series of at least seven volumes plus later FOIA postings on Clarke, FAA, and NTSB transcripts.
Joint Inquiry discussion of Osama Bassnan and alleged Saudi payments
Joint Inquiry into Intelligence Community Activities Before and After 9/11 (including Part Four, declassified 2016) · 2016-07-15
A congressional inquiry recorded alleged Bassnan–Saudi official financial ties in the same city as the hijackers.
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.
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.
Official documents
80The Osama Bin Laden File (NSAEBB 343), posted 2 May 2011
The Osama Bin Laden File (NSAEBB 343) · 2011-05-02
On the day of bin Laden's death the National Security Archive posted an Osama Bin Laden File that is an index of prior FOIA briefing books on UBL, Pakistan, and the Taliban.
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 SEIBs June–August 2001: Bin Ladin attacks 'imminent' / 'in the US'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-07
CIA senior briefs from June–August 2001 repeatedly warned of imminent Bin Ladin operations, including a 7 August SEIB titled 'Bin Ladin Determined to Strike in the US', and a 24 August note that an associated individual was considering U.S. operations without timing or targets.
Taliban File update: U.S. pressed Taliban to expel UBL over 30 times
The Taliban File (NSAEBB 97) and updates · 2004-01-30
The National Security Archive's Taliban File update states the U.S. pressed the Taliban to expel bin Laden over 30 times, with only three approaches in the first Bush year.
Predator over Afghanistan, autumn 2000: likely UBL, no shoot capability
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
CIA notes in the 2012 File say an unarmed Predator twice observed a person most likely to be bin Laden in autumn 2000 and could not act.
1998 raw intelligence: UBL hijack trial run at a New York airport
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 1998-12-03
A December 1998 CIA raw report, later a PDB item, stated that a UBL-linked hijack plan was proceeding and that two team members in the U.S. had evaded security in a New York airport trial run.
Independent / media
53Piers 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.
Piers Robinson — Manual or Automated? Flight simulation of reported 9/11 aircraft manoeuvres (May 2026)
Piers Robinson, Manual or Automated? Flight simulation study of reported 9/11 aircraft manoeuvres (May 2026) · 2026-05-01
IC911 published a May 2026 Robinson report whose title frames reported 9/11 manoeuvres as a manual-vs-automated question.
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.
Barbara Honegger — Evidence of explosives at the Pentagon (Toronto Report ch.13)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Honegger compiles Pentagon witnesses who used bomb/cordite language, cites stopped clocks around 9:31–9:32, and treats the FBI code name PENTTBOM as evidence of a bombing investigation.
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.
IC911 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.
Unresolved contradictions
- CTR-0031 February mosque visit: Bayoumi vs Bin Don
- CTR-008WTC dust chips: thermite vs primer paint
- 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