I had my suspicions for entirely different reasons, but when this easily demonstrable fact was pointed out to me, I knew for sure we were being conned about what happened to the WTC on 9-11-01.
Jet fuel is essentially kerosene. If you've ever been camping with a kerosene burner, you know it's not going to melt your stainless steel cookware if you accidentally boil away your water or something. So if you're not afraid to fry an egg on a propane cooker, or fly in a plane without the engine melting, why would you assume fires from jet fuel and otherwise ordinary office fires would cause a massive steel frame building to collapse in on itself?
My answer to that question is, well, I wouldn't assume that. But for the first time in history, ordinary office fires/jet fuel caused 3 massive steel-framed skyscrapers to collapse perfectly into their own footprint. Yet we know there were pools of molten steel at the bottom of the towers for weeks afterward. Droplets of steel spheres were found in the WTC dust (that's how they used to make musket balls in the old days, dropping molten lead from high places). We can actually see the molten metal flowing from the towers in pictures from the collapse:
So if regular office fires don't cause buildings to suddenly collapse, how do you explain this molten steel? Well, thermite burns hot enough to melt steel, and that's exactly what some peer-reviewed scientists who examined the WTC dust think caused the twin towers to collapse (nanothermite).
Trouble with that theory is, cave-dwelling terrorists wouldn't have had access to either the WTC complex itself to apply and coordinate this nanothermite collapse, nor would they have had access to nanothermite itself. So that means someone else was involved. Gee, I wonder who?