Here is a good example of seemingly smart people losing sight of common sense:
http://www.uscrusade.com/forum/config.pl/read/1064
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Subjective: This person (and hundreds of thousands who support this theory) who has done a lot of math and research has concluded that the jet fuel cannot reach a temperature above 260(C). This is not a fact, but is a rational conclusion by someone who is not an expert in building construction.
Fact: Critical temperature of steel is 600 (C)
Lets look at this from a "common sense" perspective. Looking at just these things would make anyone agree that the planes could not have taken down the buildings
... HOWEVER ...
http://www.nist.gov/public_affairs/fact ... e_data.htm
Fact: WTC engineers designed the steel beams with additional fireproofing material coating..
Wait a minute.. Why would the WTC engineers fireproof the beams of the WTC building?!? If Jet Fuel cannot burn anywhere near the temperature needed to collapse the building, WHAT CAN? A cigarette in a trash basket??? Were the designers of the WTC buildings complete idiots?!? Why did they waste the money on a threat that is not possible to achieve according to the theory above.
I think common sense here should tells us all that people who design buildings know a lot more about how temperature and fire affect steel structures than most of us will know and quite likely the fire brought down the building.
and BTW:
Fact: The initial explosion of the airplane collision blew the fireproof coating off a lot of the steel beams.
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Building 7 remains a mystery to me, however, Im sure the vast amount of Diesel Fuel sitting in the middle of the building didnt help it withstand the damage as well as 6.