This is the greatest post in the history of the Democratic Underground. You just have to see it to believe it.
Here’s a little sample to give you an idea of what it’s like, although it doesn’t quite do it justice:
“What I conclude is that a fairly flimsy steel structure does not distort and bend and collapse very easily from a simple hydrocarbon fire. And thus, it is not clear why the much stronger steel columns in the WTC towers weakened so much from fires that the towers underwent global collapse.”