Try this simple experiment and see if it doesn't lead you to question the PHYSICS of what happened on Sept. 11.
1. Take an 8 oz or larger disposable plastic or paper cup and place it upside down.
2. Take a BRICK an place it on top of the cup.
3. See what happens? The light weight cup supports the full weight of the heavy brick. This is because it's a "tube structure" just like the World Trade Center!
4. Now raise the brick 6-12 inches and drop it straight down on the cup. What happens? The cup deforms, collapses but slows the brick and still supports the weight of it. This is similar to what SHOULD HAVE happened when the upper stories of the WTC crashing onto the lower floors.
5. Take a second cup and cut vertical slits, about 12 altogether, from top to bottom. Place this cup upside down, note that it still supports itself.
6. Repeat step #4.
7. Note that the brick falls AT THE SPEED OF GRAVITY (just like the Twin Towers) because of the weakened infrastructure of the cup. This is the same principle used for CONTROLLED DEMOLITION!

8. Now go back and look at the footage the buildings collapsing and watch the physics in action. Remember steel needs massive, sustained heat to melt, so don't fall in that trap.
You might come to the conclusion that 9-11 had to be an "inside" job...