If others insist on posting rubbish, that is not my problem,
I intend to discuss the demolition of the WTC.
Note that in all three buildings, that is WTC1, 2 & 7
the "collapse" event led to the total destruction of the building,
and that the destruction proceeded without hesitation or any jolt to be seen indicating energy transfer. The rubble from above completely and totally destroyed each and ever level of the building, not just the floors but the outside wall columns + the core, Damn good trick, don't you think?