Because "A" happened that proves that "B" happened.
You dont see how that makes 0 sense.
No, "B" happened only if theres evidence for "B" happening.

I actually looked at the Hulsey report and its seriously flawed. He uses a static analysis for a dynamic situation. You can do that for a single column but thats it. His models disregard affects of fire on the beems and the fact the fire burned for 7 hours. He manually removes columns. His models have wrong metrics.

Basically this research is absolute rubbish. Something a student could have done better. It wouldnt get a passing grade on any serious college.

And the thermite nonsense. Not a single thing points in that direction.
And the metal spheres they talk about... If you want i can show you how you can make them at home with a pack of matches and some iron filings.