Comment: Are you serious?

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In reply to comment: Buildings burn. (see in situ)

Are you serious?

Have you seen an inferno?

http://www.youtube.com/watch?v=th2bnG_7UyY

Now compare that to building 7:

http://www.youtube.com/watch?v=bWorDrTC0Qg

Tell me, how on earth can an inferno structure survive for a far longer time and slowly fall apart and another building, where there are things akin to office fires, collapse at the speed of gravity?