Based on physics it is impossible to get a near free fall collapse, without removing all supporting columns by force. It even falls into its own footprint, which requires special timing of the destruction of the columns. And watching the videos there is even more energy in the system, because huge parts of the building get blown sidewards.
Some even downwards. This shows a huge amount of excessive energy and expanding power, that is only produced by explosives or thermite. The behaviour is also 100% similar to a common demolition of a skyscraper.

Then we have the fires burning under water (as reported even in New Scientist) even weeks after the collapse.

The reason why some professional group would do this, was clear when the hit at the Pentagon only destroyed the administration. An administration that contained information about 2.3 Trillion of dollars. What wouldn't the corrupt people at the Pentagon do for a trillion or more?

Then we have the dancing Isrealis that knew that the planes were coming, and were putting them on camera. Israeli "artists" were also working with boxes that contained demolition wiring. The "hijackers" were Saudis that were partying and were staying near intelligence head quarters.

Then we have the "hijacked" planes that disappeared on the same course with military planes. Later they flew as fast as the military planes, which was faster and more agile than the real planes were capable of. The IDs on the engines of the planes also show that they were different planes. There were military drills going on related to hijacking. There were some intelligence officers in the "hijacked" planes, and they were capable of defending the plane themselves. This (together with all other evidence) makes it clear that it was all pre-planned and that the planes were switched.

The list goes on and on. Real hard evidence that shows a huge criminal act.
A crime that used real plane-crashes as a huge distraction.

The evidence also falsifies the conspiracy theory about a small foreign group organising all this from a foreign country. These were clearly designated as patsies.