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
PBS — America Rebuilds: A Day with Larry Silverstein (2002)
51%
Equal to 50% — the sources do not tip either way
The score is 51% — more than 50%. Supporting sources currently outweigh contradicting sources after quality and confidence are applied.
How 51% was calculated
Start at 50%. Move by half of the net source score after uncertainty. Net source score is 0.15 (from −1 contradict to +1 support). Uncertainty is 92%. So 50% + 50% × 0.15 × 8% remaining certainty = 51%.
Supporting sources
3
Weighted strength 0.64
Contradicting sources
2
Weighted strength 0.48
No stance yet
37
Pulls the score toward 50% · 12.42
Uncertainty
92%
Share of the file that is unlabelled or missing
Working
start at 50% + half of (net source score × remaining certainty)
0.5 + 0.5 × 0.15 × (1 − 0.92) = 0.506
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: H018 — WTC 7 was 'pulled' — a controlled demolition was ordered that afternoon. Yes/no labels are taken from sources already linked to that question. Also close: H001, H006, H013.
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. 1 matching claim(s) contributed inherited stances.
Step 3 · Assign support or contradiction without inventing
5 labelled from stored question links, 0 from claims, 0 labelled automatically (capped, marked, not saved as human review), 37 left with no stance.
Step 4 · Weight each source
Each source contributes strength = (quality / 5) × confidence × how strongly it agrees or disagrees. Support strength 0.64, contradict strength 0.48, no-stance strength 12.42. 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 × 0.15 × (1 − 0.92) = 0.506.
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
- 5 source(s) score zero on at least one quality check (shown on each card). Those zeros are kept visible and are not averaged away.
- 11 source(s) are unverified, inactive, or recorded as not retrieved. A missing file is a gap, not a finding against the question.
- 37 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 (H001) also matches this wording. The percentage below is for H018 only — open the other question to compare. Do not average the two numbers.
Closest stored question
H018 · WTC 7 was 'pulled' — a controlled demolition was ordered that afternoonengineering · match 4.1
Related questions
Same wording can map to more than one stored question. Each has its own percentage — do not average them.
Matching claims
- disputedCLM-017
Larry Silverstein ordered WTC 7 pulled in the demolition-slang sense.
Sources that support this
3Larry Silverstein, PBS 2002: 'maybe the smartest thing to do is pull it'
PBS — America Rebuilds: A Day with Larry Silverstein (2002) · 2002-09-10
The leaseholder said on camera that he suggested they 'pull it' regarding WTC 7 and that a decision to pull preceded the collapse they watched.
hypothesis link · human_seed link to H018 (seeded): On-camera 'pull it' plus 'we watched the building collapse.'
Chandler, Walter, Szamboti — Instantaneous free fall of WTC 7 and NIST's attempt to hide it (Jun 2023)
Journal of 9/11 Studies · 2023-06-01
Using multi-point tracking, Chandler/Walter/Szamboti report that after ~1.4 s of near-immobility of most of the north and west rooflines, those rooflines entered free fall together within ~0.2 s at ~8.0–8.2 s after east-penthouse collapse, ~9.8 m/s² for ~2.5 s.
hypothesis link · human_seed link to H018 (seeded): Instantaneous whole-roofline free fall is used as the physical counterpart of a pull.
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.
hypothesis link · human_seed link to H018 (seeded): Free-fall stage as the physical counterpart of a pull.
Sources that contradict this
2Silverstein Properties later: 'pull it' meant withdraw firefighters
PBS — America Rebuilds: A Day with Larry Silverstein (2002) · 2005-01-01
Silverstein's office published a firefighter-withdrawal reading of 'pull it.'
hypothesis link · zeros: contemporaneity · human_seed link to H018 (seeded): Later firefighter-withdrawal reading.
Quality zeros remain visible: contemporaneity.
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.
hypothesis link · human_seed link to H018 (seeded): NIST fire sequence, no demolition order.
Sources with no stance yet
37Poteshman 2006: unusual put-option volume on airlines before 9/11
Allen M. Poteshman, 'Unusual Option Market Activity and the Terrorist Attacks of September 11, 2001,' Journal of Business 79(4) (2006) · 2006-07-01
A peer-reviewed study found statistically unusual pre-attack put-option activity in airline stocks.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Veterans History Project — Iraq War box; loc.gov 403
SHSU Library — U.S. History: Primary Source Collections Online (9/11 page) · 2026-09-03
The guide's Iraq-war Veterans History Project link did not yield files at ingest.
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.
AA77 hijacked; Hazmi and Mihdhar aboard; Pentagon impact
9/11 Commission Report · 2004-07-22
The two men assisted in San Diego in 2000 were AA77 hijackers on 11 September 2001.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
FEMA 2002: WTC 7 fire-induced progressive collapse; further study needed
FEMA 403 — World Trade Center Building Performance Study (2002) · 2002-05-01
An early official engineering team attributed WTC 7 to fire while flagging that the mechanism was not fully understood.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
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.
unclassified · Retrieved as relevant; no inherited polarity. Unclassified mass raises uncertainty rather than inventing support or contradiction.
Columbia 9/11 Oral History Project — holdings statement
Columbia Center for Oral History Research — September 11 Oral History Project · 2026-09-03
Columbia's 9/11 oral-history project reports five programmes, over 900 hours with over 600 people, 351 of them open, plus a 2011 book. Transcripts were not ingested.
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.
Michael Ragsdale flyer collection — street paper, 11 Sep 2001–15 Sep 2002
September 11 Digital Archive (RRCHNM / ASHP) · 2001-09-12
A near-daily street collection of ~1,000 NYC flyers exists for the year after 11 September, including 11 September hospital/command-centre notices and early CIA/FBI-trust and anti-war posters.
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.