To survive 9/11, you had to be a piece of paper.

Another peculiarity of 9/11, especially the rubble.
What first responders noted was the lack of artifacts.
No doors, phones, computers or even doorknobs.
There should have been thousands of them.
But what did they find?
Stuffed animals, pictures, plastic ID cards...
If there was thermal mechanisms in play, they would have been burnt and the ID cards would be melted.
To survive 9/11, you had to be a piece of paper.