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
H013 UA93 was shot down rather than crashed solely by a passenger revolt
50%
Equal to 50% — the sources do not tip either way
The score is 50%. Supporting and contradicting sources cancel, or there is not enough directional evidence to tip the number.
How 50% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.02 (from −1 contradict to +1 support). Uncertainty is 69%. So 50% + 50% × 0.02 × 31% remaining certainty = 50%.
Supporting sources
11
Weighted strength 2.29
Contradicting sources
7
Weighted strength 2.20
No stance yet
33
Pulls the score toward 50% · 9.92
Uncertainty
69%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.02 × (1 − 0.69) = 0.503
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: H013 — UA93 was shot down rather than crashed solely by a passenger revolt. Yes/no labels are taken from sources already linked to that question. Also close: H011, H014, H001.
Step 2 · Find matching sources
40 source(s) matched the wording. 8 further source(s) already linked to the stored question were included even if they did not contain the search words. 5 matching claim(s) contributed inherited stances.
Step 3 · Assign support or contradiction without inventing
8 labelled from stored question links, 13 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 2.29, contradict strength 2.2, no-stance strength 9.92. 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 × 0.02 × (1 − 0.69) = 0.503.
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
- 10 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 12 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 (H011) also matches this wording. The percentage below is for H013 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H013 · UA93 was shot down rather than crashed solely by a passenger revoltday-of · match 46.3
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-018
UA93 was shot down by U.S. military rather than crashed by a passenger counterattack.
- partially_supportedCLM-026
NORAD/FAA war-games and false timelines indicate the air-defence failure was more than accident.
- contradictedCLM-019
The Pentagon was not struck by AA77.
- 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.
Sources that support this
11Flight 93: white jet / C-130 and shoot-down rumours
NTSB flight-path studies, Air Traffic Control tapes, and CVR/FDR summaries (AA11, UA175, AA77, UA93) · 2001-09-11
Other aircraft were near UA93 at the end, and wreckage was distributed along a path, not a single postage-stamp hole only.
hypothesis link · human_seed link to H013 (seeded): Nearby military aircraft and distributed debris.
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.
hypothesis link · human_seed link to H013 (seeded): Griffin ch.7 UA93 shoot-down strand (Nash, debris, phones).
CIT / no-Boeing-at-Pentagon claim
Citizen Investigation Team / Pentagon no-Boeing claims · 2009-01-01
A set of independent researchers published a no-Boeing account of the Pentagon event, citing selected witnesses and façade photos.
claim stance · zeros: contemporaneity, corroboration, chain_of_custody · Inherited from matching claim CLM-019.
Quality zeros remain visible: contemporaneity, corroboration, chain_of_custody.
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.
John Farmer: NORAD and some FAA accounts of 11 September were not true
John Farmer / 9/11 Commission staff statements on NORAD and FAA accounts · 2004-07-22
Commission senior counsel stated that NORAD's (and some FAA) accounts were not true.
claim stance · Inherited from matching claim CLM-026.
NORAD exercises on 11 September including Vigilant Guardian
Michael Bronner, '9/11 Live: The NORAD Tapes,' Vanity Fair (August 2006) · 2006-08-01
NORAD was running exercises on 11 September that included hijack-related injects, and operators asked whether reports were exercise or real.
claim stance · Inherited from matching claim CLM-026.
Commission / NORAD tapes: delayed notification and a phantom AA11
9/11 Commission Report · 2004-07-22
Military notification lagged FAA awareness; a phantom AA11 was injected into the response.
claim stance · Inherited from matching claim CLM-026.
Sources that contradict this
7Commission: UA93 crashed near Shanksville at 10:03:11 after a passenger revolt
9/11 Commission Report · 2004-07-22
UA93 impacted a field in Somerset County, Pennsylvania, at 10:03:11. Official transcription of the CVR describes a passenger counterattack.
hypothesis link · human_seed link to H013 (seeded): Commission/CVR passenger-revolt finding.
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.
hypothesis link · human_seed link to H013 (seeded): 09:23 warning then 09:28 hijack mayday is the passenger-revolt sequence, not a shoot-down order.
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-019.
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.
hypothesis link · human_seed link to H013 (seeded): PM rejects UA93 shoot-down.
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.
claim stance · Inherited from matching claim CLM-019.
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.
claim stance · Inherited from matching claim CLM-019.
Commission: AA77 struck the Pentagon at 09:37:46
9/11 Commission Report · 2004-07-22
The Commission states AA77 struck the Pentagon at 09:37:46.
claim stance · Inherited from matching claim CLM-019.
Sources with no stance yet
33911DA email, 11 September 2001: 'a plane crashed outside PIT!'
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-11
A 11 September 2001 email in the Digital Archive consists of the sentence 'a plane crashed outside PIT!'
hypothesis link · human_seed link to H013 (seeded): Same-day 'plane crashed outside PIT' is crash-language, not a mechanism.
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.
hypothesis link · human_seed link to H013 (seeded): Shoot-down orders were discussed that morning; link to UA93 not shown.
Natalie Schilling — Addendum covering AA11 and UA93 audio (Aug 2026)
Natalie Schilling, Linguistic Analysis of AA11 transmissions purported to be Mohamed Atta (April 2026) and addendum (August 2026) · 2026-08-01
An August 2026 addendum expands the Schilling linguistic work from AA11 to UA93 audio.
hypothesis link · zeros: contemporaneity · human_seed link to H013 (seeded): UA93 audio addendum not yet read.
Quality zeros remain visible: contemporaneity.
Judge Daniels 2024: not 'just an innocent participant'
In re Terrorist Attacks on September 11, 2001 (S.D.N.Y.) · 2024-08-01
A U.S. district judge in 2024 drew a reasonable-inference finding that Bayoumi's housing help was tasked by the Saudi government.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Stratesec / Marvin Bush board role at a firm with WTC security work
Composite tertiary web commentary (circular-sourcing demonstration) · 2005-01-01
A firm with some WTC security work had a Bush family board member years before 9/11.
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.
Judy Wood: directed-energy destruction of the towers
Judy Wood — Where Did the Towers Go? (directed-energy claims) · 2010-01-01
An independent researcher published a directed-energy account of the tower destructions.
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.
2024 reporting: Bayoumi misstated the timing of the Los Angeles trip
ProPublica / New York Times reporting on declassified FBI files (2023–2024) · 2024-08-09
Investigative journalists, citing civil-case evidence, report that Bayoumi's trip timing was false and the meeting appears planned.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Commission: AA11 struck WTC1 at 08:46:40
9/11 Commission Report · 2004-07-22
A large aircraft identified as AA11 struck WTC 1 at 08:46:40 on 11 September 2001.
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.