A W Smith
Philosopher
Your suggestion is appropriate and would be fair enough if NIST would release the videos they took these stills from.
I do not see any bowing in any of the videos, other than just prior to collapse, that I have had access to. I have repeatedly asked people here if they know of any which do show it.
is it your assertion that the photos in the pdf document were retouched to show bowing of the columns ?

