“EXPLAIN THIS” – Sure. WTC7 was a dreadful building, worse in its own ways than even the Twin Towers. The UAF Report documents that column loads were wildly uneven, with column 79 carrying far more than most others, nearly four times the load of column 65. WTC7 was built partly on foundations laid years earlier, intended for a building around a third of the weight of WTC7. A quick scan of the UAF Report reveals steel members running this way and that, at odd angles, supported by further ad-hoc components. Further, this report establishes that global collapse of the building would have ensued from the failure of just six core columns. WTC7’s design looked like it had been cobbled together from spare parts to place the maximum office space on the least support at minimal expense; replacement was the best fate for it, so it is entirely to be expected that rebuilding had been considered.