Not only that but in the pancake theory one would expect the pancakes to become detached from the core verticals, and so in the final picture there would remain a central core standing right up to the height of the impact, at least.
The core steels were massively stronger than the outer shell, but they disappeared too. (Remember that column in the rubble with a 45 degree cut in it? - they were snipped with thermite - EDIT: the angle cuts are discussed at length in this debunk piece https://www.metabunk.org/threads/debunked-the-wtc-9-11-angle-cut-column-not-thermite-cut-later.9469/page-3#posts , doesn't change the implausibility of a plane collapsing each tower completely)
Not only that but in the pancake theory one would expect the pancakes to become detached from the core verticals, and so in the final picture there would remain a central core standing right up to the height of the impact, at least.
The core steels were massively stronger than the outer shell, but they disappeared too. (Remember that column in the rubble with a 45 degree cut in it? - they were snipped with thermite)