Undermines· moderateSEP-E005
The challenger study's conclusions, and its own hedge
- what the source states
- "The principal conclusion of our study is that fire did not cause the collapse of WTC 7 on 9/11, contrary to the conclusions of NIST and private engineering firms that studied the collapse. The secondary conclusion of our study is that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of every column in the building." On its own limits: "We cannot completely rule out the possibility that an alternative scenario may have caused the observed collapse; however, the near-simultaneous failure of every column is the only scenario we identified that was capable of producing the observed behavior."
- what we infer
- The most substantial published challenge to the official mechanism, and more cautious in its own text than in its reception. Its stated conclusion is that it identified no fire-driven scenario reproducing the collapse — which is weaker than, and often reported as, a demonstration that none exists.
- limitations
- Funded by the advocacy organization campaigning for its conclusion, which the report acknowledges without stating the amount.
- Not peer-reviewed in a journal.
- Used a single static temperature distribution rather than a modeled fire progression.