EFI·Evidence Fusion Initiative

H009

Relevant intelligence was withheld from the 9/11 Commission

Material on Saudi-linked assistance, especially regarding Bayoumi's alleged intelligence role, was not provided to or confirmed for the Commission in 2003–2004.

openPhase 1

Likelihood — more or less than 50%

More than 50%

94%

More than 50% — well supported by the sources

0% — fully contradicted50%100% — fully supported

Start at 50%. Move by half of the net source score after uncertainty. Net source score is 1.00 (from −1 contradict to +1 support). Uncertainty is 12%. So 50% + 50% × 1.00 × 88% remaining certainty = 94%.

0.5 + 0.5 × 1.00 × (1 − 0.12) = 0.940

Recalculate with sources

Adversarial challenge

  • Contradicting objects: 0
  • Supporting objects: 5
  • Distinct source classes: 3
  • Objects with a zero quality dimension: 0

Version history

  1. v1 · 2004-07-22 · conf 0.35 · unc 0.50

    Suspicion only, pre-declassification.

  2. v2 · 2022-03-01 · conf 0.74 · unc 0.22

    FBI 2017 text plus Commission leadership comments on withholding.

strongly supports1

supports2

weakly supports2

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Open review queue

Developed by British researcher Moneypenny

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