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
Odigo instant-message warning reports (Ha'aretz / Washington Post, 2001)
58%
More than 50% — weakly supported by the sources
The score is 58% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 58% 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 77%. So 50% + 50% × 0.66 × 23% remaining certainty = 58%.
Supporting sources
11
Weighted strength 2.74
Contradicting sources
2
Weighted strength 0.55
No stance yet
33
Pulls the score toward 50% · 11.15
Uncertainty
77%
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 − 0.77) = 0.576
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: H020 — Specific pre-attack warnings (Odigo and similar) show that some non-plot actors knew the morning's targeting. Yes/no labels are taken from sources already linked to that question. Also close: H019, H004, H016.
Step 2 · Find matching sources
40 source(s) matched the wording. 2 further source(s) already linked to the stored question were included even if they did not contain the search words. 4 matching claim(s) contributed inherited stances.
Step 3 · Assign support or contradiction without inventing
2 labelled from stored question links, 13 from claims, 0 labelled automatically (capped, marked, not saved as human review), 31 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 2.74, contradict strength 0.55, no-stance strength 11.15. 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 − 0.77) = 0.576.
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
- 3 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.
- 33 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 (H019) also matches this wording. The percentage below is for H020 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H020 · Specific pre-attack warnings (Odigo and similar) show that some non-plot actors knew the morning's targetingforeknowledge · match 8.4
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-030
WTC 7's entire measurable north and west rooflines instantaneously transitioned to free fall, a behaviour NIST's Stage 1 description conceals.
- 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.
- 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-032
NIST NCSTAR reports on the WTC are false as engineering explanations.
Sources that support this
11Odigo: two employees received a warning message about two hours before the first impact
Odigo instant-message warning reports (Ha'aretz / Washington Post, 2001) · 2001-09-28
Odigo confirmed that two employees received a pre-attack warning message; origin not established in public files.
hypothesis link · human_seed link to H020 (seeded): Odigo confirmed a pre-attack warning message.
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.
claim stance · Inherited from matching claim CLM-042.
DCI Report draft 19 March 2004: FBI dissemination still 'spotty'; cultures clash
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2004-03-19
A March 2004 CIA draft history says FBI internal dissemination remained so weak that CIA officers still hand-delivered messages, and that FBI-CIA cultural clash impeded results.
claim stance · Inherited from matching claim CLM-042.
CIA email 21 August 2001: 'Re: Khalid Al-Mihdhar'
The Central Intelligence Agency's 9/11 File (NSAEBB 381) · 2001-08-21
A CIA email dated 21 August 2001 is titled Re: Khalid Al-Mihdhar and is a Commission Chapter 8 citation.
claim stance · Inherited from matching claim CLM-007.
CIA had Mihdhar visa information in January 2000; FBI notified August 2001
9/11 Commission Report · 2004-07-22
U.S. intelligence possessed Mihdhar's visa/travel data in January 2000 and did not get it to FBI watchlisting until August 2001.
claim stance · Inherited from matching claim CLM-007.
Sources that contradict this
2NIST 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.
claim stance · Inherited from matching claim CLM-030.
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-032.
Sources with no stance yet
33PDB 6 August 2001: Bin Ladin Determined To Strike in US
President's Daily Brief, 6 August 2001 — 'Bin Ladin Determined To Strike in US' · 2001-08-06
The President received a 6 August 2001 brief stating Bin Ladin was determined to strike in the United States, including hijacking-related patterns.
hypothesis link · human_seed link to H020 (seeded): PDB is general threat awareness, not a morning-of targeting warning.
NIST 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.
claim stance · Inherited from matching claim CLM-030.
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.
unclassified · zeros: corroboration, chain_of_custody · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: corroboration, chain_of_custody.
BBC 23 September 2001: some named hijackers reported still alive
BBC News, 23 September 2001 — reports that some named hijackers were still alive · 2001-09-23
Reputable outlets reported in September 2001 that some named hijackers were alive.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
FDNY Incident Action Plans collection (Ground Zero, Sep 2001–2002)
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-21
FDNY published daily Incident Action Plans for Ground Zero rescue and recovery from at least 21 September 2001 through early 2002, covering hazards, void searches, and DDC work in the pit. A 911DA collection hosts them.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Natalie Schilling — Linguistic analysis of AA11 transmissions purported to be Mohamed Atta (Apr 2026)
Natalie Schilling, Linguistic Analysis of AA11 transmissions purported to be Mohamed Atta (April 2026) and addendum (August 2026) · 2026-04-01
A 2026 linguistic report on AA11 audio attributed to Atta was published under IC911 Reports, authored by Natalie Schilling, Ph.D.
unclassified · zeros: contemporaneity · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: contemporaneity.
BBC Jane Standley reports WTC 7 collapsed while it stands on camera
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001) · 2001-09-11
BBC World reported WTC 7 had collapsed at a time when the building was still standing on camera.
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.