Creative Speculation
In reply to the discussion: Building 7 [View all]nationalize the fed
(2,169 posts)Summary from NCSTAR 1A WTC 7 Investigation (PDF)
http://www.nist.gov/customcf/get_pdf.cfm?pub_id=861610
"...Thus, WTC7 did not collapse due to fire-induced weakening of critical columns"... 
"...Temperatures did not exceed 300 °C (570 °F) in the core or perimeter columns in WTC7"...
"...The thermal expansion of the WTC7 floor beams...occurred primarily at temperatures below ~750 °F"... 

We are asked to believe that temperatures lower than those seen in self cleaning ovens caused a 47 story building to collapse in a matter of seconds.
A self-cleaning oven is an oven which uses high temperature approximately 500° Celsius (900° Fahrenheit) to burn off leftovers from baking, without the use of any chemical agents.
http://en.wikipedia.org/wiki/Self-cleaning_oven
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