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
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001)
62%
More than 50% — weakly supported by the sources
The score is 62% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 62% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.74 (from −1 contradict to +1 support). Uncertainty is 68%. So 50% + 50% × 0.74 × 32% remaining certainty = 62%.
Supporting sources
14
Weighted strength 4.39
Contradicting sources
3
Weighted strength 0.65
No stance yet
33
Pulls the score toward 50% · 10.70
Uncertainty
68%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.74 × (1 − 0.68) = 0.618
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: H001 — AA11 struck WTC1. Yes/no labels are taken from sources already linked to that question. Also close: H006, H004, H019.
Step 2 · Find matching sources
40 source(s) matched the wording. 5 further source(s) already linked to the stored question were included even if they did not contain the search words. 6 matching claim(s) contributed inherited stances.
Step 3 · Assign support or contradiction without inventing
5 labelled from stored question links, 13 from claims, 0 labelled automatically (capped, marked, not saved as human review), 32 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 4.39, contradict strength 0.65, no-stance strength 10.7. 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 × 0.74 × (1 − 0.68) = 0.618.
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
- 6 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 9 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 (H006) also matches this wording. The percentage below is for H001 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H001 · AA11 struck WTC1day-of · match 9.9
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- verifiedCLM-011
American Airlines Flight 11 struck World Trade Center 1 at 08:46:40 on 11 September 2001.
- 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.
- 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.
- 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-012
United Airlines Flight 175 struck World Trade Center 2 at 09:03:11.
Sources that support this
14Commission: 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.
hypothesis link · human_seed link to H001 (seeded): Commission + live video of AA11 into WTC1.
Commission: UA175 struck WTC2 at 09:03:11
9/11 Commission Report · 2004-07-22
A large aircraft identified as UA175 struck WTC 2 at 09:03:11, captured on live television.
claim stance · Inherited from matching claim CLM-012.
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-015.
NIST: no corroborating evidence for explosives or thermite
NIST WTC investigation FAQs (towers and WTC 7) · 2019-11-20
NIST published a negative finding on explosives and thermite as collapse causes.
claim stance · Inherited from matching claim CLM-013.
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-013.
Sonic Memorial: Eva Garfield Greenwich Village voicemails, 11 September
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-11
The Sonic Memorial collection includes saved 11 September voicemails in which Eva Garfield, from Greenwich Street, says she watched the towers fall, plus other WTC-building memory recordings.
hypothesis link · human_seed link to H001 (seeded): Village voicemail caption: watched the towers fall.
911DA email: 6 blocks from Ground Zero, second-plane sound
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-12
A public-archive email describes street-level ash, paper, a 08:53 Wall Street exit, and the sound of a second aircraft hitting the South Tower from 5–6 blocks away, plus a Pentagon-evacuation report from Washington.
hypothesis link · human_seed link to H001 (seeded): Street-level ash/paper after 08:53 plus a second aircraft sound is consistent with AA11 then UA175.
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.
hypothesis link · human_seed link to H001 (seeded): In-cluster critique of no-plane theories.
Sources that contradict this
3FDNY oral histories: multiple firefighters report explosions
New York Fire Department oral histories (released 2005 after lawsuit) · 2005-08-12
Multiple trained first responders independently described explosion-like events at the WTC site on 11 September 2001.
claim stance · Inherited from matching claim CLM-013.
Harrit et al. 2009: active thermitic red/gray chips in WTC dust
Harrit, Farrer, Jones, Ryan et al., The Open Chemical Physics Journal 2:7–31 (2009) · 2009-04-03
A 2009 peer-reviewed paper reports energetic red/gray chips in WTC dust that the authors identify as unreacted thermitic material.
claim stance · Inherited from matching claim CLM-013.
Hulsey et al. (UAF): fire did not cause the observed collapse of WTC 7
Hulsey, Quan, Xiao — University of Alaska Fairbanks WTC 7 study (2019–2020) · 2020-03-01
A University of Alaska Fairbanks team published a model concluding fire did not cause WTC 7's observed collapse.
claim stance · Inherited from matching claim CLM-015.
Sources with no stance yet
33NIST 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-015.
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.
Barry Jennings and Michael Hess: explosions and being trapped in WTC 7
BBC World — Jane Standley live report of WTC 7 collapse (11 September 2001) · 2001-09-11
Jennings and Hess were trapped in WTC 7 and described explosion-like events and delayed rescue.
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.
Kevin R. Ryan — Why the NIST World Trade Center Reports are False (Toronto Report ch.3)
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Ryan cites NIST test and model figures (steel temperatures, sag, expansion, fire duration) and states they do not support the published collapse sequences; he notes NIST did not release its global models for independent runs.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Lorie Van Auken and Bob McIlvaine — Toronto Report ch.1 family testimony
The 9/11 Toronto Report (2012), International Hearings on the Events of September 11, 2001 · 2012-09-11
Two 9/11 family members testified in 2011 about their dead, the Jersey Girls' campaign for a full investigation, three NORAD public timelines, and Van Auken's contemporaneous unease at the Florida classroom footage.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
911DA email, 12 September 2001: planned desk, 50th floor, 1 WTC
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-12
A 12 September 2001 email claims a dealing-room desk on the 50th floor of 1 WTC was being stood up over Labor Day 2001, and that some co-workers may have been in the building.
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.