Warning this video could be very disturbing to the way you think about 9/11. But I encourage you to take the challenge by clicking and viewing the entire video.
Here is a sample of how a building is "pulled'. There are puffs of smoke, blast sounds and lights and it buckles and falls at free fall speed. Like dropping a rock from the top of a building. They also fall in their own footprint nice and neatly.
Here is another sample.
Make your own judgements about what happened to building 7 on that terrible day. Twelve years ago I made up my mind and it was not for the official story of a fire neatly bringing down this skyscraper of a building, in it's own footprint.