Ironically, for all your sarcasm, you fail to actually ask a single question.Here we go with the truster's I'll and ask say whatever comes to mind and as long as it's all in the right direction it won't be questioned by the local swarm.
if the wiring and detonators were proofed against fire and impact, they're already more durable than the black boxes were. Flight recorders, quite frequently, are too damaged to provide correct data.
Let's go trusters beat the crap out of that.
Black boxes aren't designed to take an impact of 100s of MPH, nor an hour of fire, and they do, in fact, fail often after plane crashes.
Remember, these explosives would also have to be attached to beams that were knocked clean out of the buildings, and deposited randomly in Manhattan. Unless the 'spirators actually knew exactly which beams would and wouldn't be knocked out of the buildings, and/or where they would land in order to send the black vans reported by several people to confiscate the incriminating debris, which is laughable.