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
Able Danger hearings and Lt. Col. Anthony Shaffer / Rep. Curt Weldon statements (2005)
56%
More than 50% — weakly supported by the sources
The score is 56% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 56% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.56 (from −1 contradict to +1 support). Uncertainty is 80%. So 50% + 50% × 0.56 × 20% remaining certainty = 56%.
Supporting sources
8
Weighted strength 2.02
Contradicting sources
2
Weighted strength 0.56
No stance yet
34
Pulls the score toward 50% · 10.41
Uncertainty
80%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.56 × (1 − 0.80) = 0.556
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: H015 — Able Danger identified Atta's cell before 9/11 and was blocked from warning the FBI. Yes/no labels are taken from sources already linked to that question. Also close: H008, H007, H011.
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, 9 from claims, 0 labelled automatically (capped, marked, not saved as human review), 33 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 2.02, contradict strength 0.56, no-stance strength 10.41. 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 × 0.56 × (1 − 0.80) = 0.556.
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
- 8 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 3 source(s) are unverified, inactive, or recorded as not retrieved. A missing file is a gap, not a finding against the question.
- 34 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 (H008) also matches this wording. The percentage below is for H015 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H015 · Able Danger identified Atta's cell before 9/11 and was blocked from warning the FBIintelligence_failure · match 11.9
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-020
Able Danger identified Mohamed Atta's cell before 11 September and was blocked from notifying the FBI.
- disputedCLM-035
A small CIA Alec Station group intentionally withheld Mihdhar/Hazmi information from the FBI, and the purpose became to allow the attacks.
- 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-030
WTC 7's entire measurable north and west rooflines instantaneously transitioned to free fall, a behaviour NIST's Stage 1 description conceals.
Sources that support this
8Able Danger: Shaffer/Weldon say Atta's Brooklyn cell was identified before 9/11
Able Danger hearings and Lt. Col. Anthony Shaffer / Rep. Curt Weldon statements (2005) · 2005-09-21
Able Danger officers testified they had identified Atta before 9/11 and were blocked from notifying the FBI. Commission staff found the claim unsupported.
hypothesis link · human_seed link to H015 (seeded): Shaffer/Weldon Atta-identification testimony.
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.
claim stance · Inherited from matching claim CLM-030.
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.
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.
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.
Sources that contradict this
2Commission 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.
hypothesis link · human_seed link to H015 (seeded): Commission staff unsubstantiated.
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.
claim stance · Inherited from matching claim CLM-030.
Sources with no stance yet
34NIST 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.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
David Ray Griffin — Anomalies in official accounts of AA77 and UA93 (Toronto Report ch.7)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Griffin's 2012 chapter lists named process contradictions on AA77 notification and UA93 notification, plus Pentagon-object and UA93-shoot-down arguments with named witnesses and an FAA memo.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
Graeme MacQueen — 156 eyewitnesses describing explosions at the Twin Towers (Toronto Report ch.8)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
MacQueen compiled 156 accounts, mostly FDNY oral histories, in which speakers used explosion/bomb language about the towers; he documents both the original wording and some later retractions.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · zeros: contemporaneity, corroboration, chain_of_custody · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Quality zeros remain visible: contemporaneity, corroboration, chain_of_custody.
Topics
Day-of events, engineering questions, process failures, and foreknowledge leads.