It might not be possible totake down a building like the towers by verinage because the core is immensely stronger than the floors or the perimeter columns. Note that the dropping ogf the upper part of the core onto the lower did not crush it down. The weight of the debris was thus shunted aside to the floors. Part of the problem is that it is impossible to keep two relatively small elements aligned for the whole process. The standing core is too small and hard a target for the upper block core columns, and the upper co,umns did not fall straight down.