Was there something you didn't understand about what I wrote? I don't need to have any "term" for these data points other than data points. What is your point? I'm not interested in your attempt to distract from the fact that the building descended at free fall acceleration for a significant period of time through its own massive structure. It's not important, what is important is that the building descended at free fall acceleration for a significant period of time through its own massive structure and in about 6 seconds total. But read on anyway Mr. Distractor. Which is observable in the videos. Why aren't you using the entire graph? That's rhetorical, I know why. If you note, the data points prior to free fall are not a straight line. So did the roof line move up and down several times? No, the data points are approximations, OBVIOUSLY. And you're trying to play your typical games. That's YOUR proper statement that YOU want to use in order to try to distract. The proper statement and what is most significant is that WTC7 descended at free fall through its own structure for a period of 2.25 seconds from the moment the roof line began to descend, end of story. I've seen all the videos that I'm aware of that exist that show the descent of WTC7. There is no video that I'm aware of that shows WTC7 descending from the south facade. However there are videos that show 3 corners descending uniformly. Although there are none that show all 4 corners that I'm aware of, I find it difficult to imagine that the 4th unseen SE corner is descending at a different rate. And I'm 100% certain you know this but if you really don't: I did in other posts. However the entire building, all 47 stories are descending at free fall for a period of 2.25 seconds (or 8 stories worth). Not a chance Gamo, you're trying to pretend my statement is deceptive. And by your semantics you're also trying to distract from the fact that the entire building dropped at free fall. It doesn't really matter how long the free fall time period was. It doesn't even matter if it was exactly free fall or less than free fall. What matters is the building descent ACCELERATED through its own massive structure, just like the twin towers that were destroyed top down at 2/3 free fall ACCELERATION through their own massive structures.