H015
Able Danger identified Atta's cell before 9/11 and was blocked from warning the FBI
Data-mining programme existence is not in serious dispute. The Atta-identification and the block are the load-bearing claims, contradicted by Commission staff.
Likelihood — more or less than 50%
41%
Less than 50% — weakly contradicted by the sources
Start at 50%. Move by half of the net source score after uncertainty. Net source score is -0.25 (from −1 contradict to +1 support). Uncertainty is 25%. So 50% + 50% × -0.25 × 75% remaining certainty = 41%.
0.5 + 0.5 × -0.25 × (1 − 0.25) = 0.406
Recalculate with sourcesAdversarial challenge
- Contradicting objects: 1
- Supporting objects: 1
- Distinct source classes: 1 — independence is thin if everything traces to one class.
- Objects with a zero quality dimension: 0
Version history
v1 · 2005-09-21 · conf 0.40 · unc 0.50
Multiple Able Danger witnesses vs Commission staff negative. Open contradiction.
supports1
Able 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.
human_seed · seeded · Shaffer/Weldon Atta-identification testimony.
contradicts1
Commission 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.
human_seed · seeded · Commission staff unsubstantiated.
Human review can dispute any AI or seeded link. Seeded links are labelled and are not silent overwrites.
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