This isn’t a video trying to debunk every little shred of evidence that 9/11 conspiracy theorists have come up with in the last 14 years, it focuses solely on the popular internet meme that jet fuel can’t melt steel beams and thus the towers could have only fallen if sabotaged. While it is true that jet fuel can’t burn hot enough to melt steel beams it can burn at temperatures high enough so that steel loses all its structural integrity. The demonstration is pretty simple, take a piece of structural rated steel and show how much it can lift. The man in the video uses a thin beam to lift a 250lb anvil.
Then heat it up to about 1800 degrees, the top end of what jet fuel can burn at, and see how much it can lift. This guy shows that at those high temperatures that he can now bend the steel beam with just using his pinky finger. Again, the man in the video says that he isn’t trying to dispel all of the 9/11 conspiracy theories but the idea that jet fuel can’t burn hot enough to cause a steel beam supported building to collapse is complete bullshit.
You can watch the whole demonstration below: