ok, none of us are engineers so lets put it in our terms.
have you ever seen those fake huge cock vidoes with the ridiculous cum shots? you know, the Freaks of Cock ones like this:
http://galleries.freaksofcock.com/vb...lane/vid03.mpg
what if the producer was trying to convince everyone that they are real cocks with real cumshots? would you believe him? what if the guy who was wearing the fake cock swore up and down it was real.
would you believe it? well, believe it or not alot of people believe those are real but we know better don't we!
now imagine a structual engineer watching those videos of the buildings collapsing. don't you think they would know the difference between a structual failure and a demolition?