The World's Leading Butcher

No I didn't. I said they fell without pulling down the core and perimeter structures.

Having countless tons fall on top of you tends to have that effect.

More that, since the core structure was not the part that failed and collapsed, its resistance to collapse was irrelevant.

The problem with that explanation is that there were even more countless tons of undamaged cold, hard steel below the upper block.

Another problem with your explanation is that it completely ignores the law of conservation of energy.

This was covered in the other thread.

http://www.youtube.com/watch?v=xGAofwkAOlo
30 second mark, and 1:12 mark.

You believe that this upper block acted as a pile driver to crush the lower intact core structure below it. But if that were the case, there would have been not only a visible jolt and pause of the downward movement of the upper block,

but also the destruction of the more heat-damaged upper block as it met with the lower block.

As such, the collapse would have been arrested because the upper block would have been destroyed easier and faster than the intact lower block.

But that's not what happened. Once the upper block is in motion, it does not slow down.

You don't know it, but you are making the claim that one structure passed through another structure as if it weren't there, which is impossible.

Except that the core collapsed along with the floors.

Videos illustrate that this is another outright lie. Perimeter box columns and the core did not remain standing.

The fires were never hot enough to begin with.

You see this in the molten iron/steel flowing out the windows of WTC 2 minutes before the collapse initiated right at that part of the building.

That is incorrect. Each floor was all open space. All of the load-bearing structure was either in the core or the perimeter.

The fact that gravity will cause countless tons to squash things does not ignore conservation of energy.

That's just a video of the second collapse. I don't see what the point is.

It doesn't take very long for countless tons to snap off weak connections that are not designed to carry anywhere near that weight.

Video of the collapse shows that there was a brief pause when each of the first few floors went, but once momentum got going the floors went faster and faster.

And as each additional floor collapsed, that added even more weight to the mass smashing down on subsequent floors.

That wouldn't arrest the collapse. Damage didn't make the collapsing mass any lighter.

. . . the lower half of the core stood for about half a minute after the rest of the building had already collapsed.

They were more than hot enough to weaken steel.

That is molten aluminum.