having read this users posts in the past I know full well he can exaggerate, and often does it for the humor. If you want to be very picky about it then I don't think it's 100% impossible, however, it goes without saying that the conspiracy theorists view complicates what might be otherwise valid alternatives to ridiculous extents. Controlled demolition, Star Wars technology, no planes, come up with what ever you want. In the end what you lack is evidence, and the supposed a case that you guys have against the engineering explanations offered for the collapses of the buildings has failed to reach even a rudimentary level that deserves recognition. In that respect I can understand why the thread was made; it is truther's incompetence that ultimately renders such theories impossible. It is their incompetence that reduces the value of their own evidence and nothing more.