And exhibited none of the characteristics of destruction
by fire, i.e. ...
3. Evidence of fire temperatures capable of softening steel
"I've already shown you testimony from a steel inspector who told of the softening and twisting of the steel."
The fact that an inspector found softening and twisting of the steel only means that -something- softened and twisted it (explosives could certainly manage it), not that there was any evidence that the jet fuel or office fires did it.
"And the lack of concrete in the buildings core and outer
columns made the towers were more vulnerable to fire."
You may want to read this:
The Core Structure Of The World Trade Center Towers Was A Steel Reinforced, Cast Concrete, Tubular Core.