NIST final draft

NIST - A Tale of Two Theories - The final Fantasy

Shyam Sunder describes in the NIST technical briefing and the slide show/document titled;
NIST Response to the World Trade Center Disaster Federal Building and Fire Safety Investigation of the World Trade Center Disaster August 26, 2008
states on page 32: “Forces from thermal expansion failed the connection at Column 79, then pushed the girder off the seat.” [to the west]

In NCSTAR 1-9 Vol.1 page 353 [397 on pg counter] it says:
“Axial compression then increased in the floor beams, and at a beam temperature of 436 °C, the northmost beam began to buckle laterally. Buckling of other floor beams followed as shown in Figure 8–27 (a), leading to collapse of the floor system, and rocking of the girder off its seat at Column 79 as shown in Figure 8–27 [to the east]

Dylan Avery posed the question "Who writes this stuff?"

I can't say for sure but the evidence seems to point to one of the founding fathers.
Note text at 0:30
http://www.youtube.com/watch?v=GMtdXUoc_mQ&feature=related