While I wouldn't feel comfortable saying with certainty that it was an inside job, there are a lot of things about the attack that just feel unanswered and wrong to me. The two primary ones that come to mind are
1) the extremely low ("impossibly" low) flight path of the plane heading towards the pentagon and subsequent lack of remains.
2) The quickness and ease of which the towers fell, when only their upper floors were hit and on fire. From what I've read, the fire couldn't have even burnt hot enough to melt the material the cores of the building were made out of, let alone let the buildings collapse perfectly straight down within themselves. If you look at other buildings that have exploded and were on fire, they collapse entirely differently (or, most of the time, never collapse). These towers instead collapsed in a fashion that looked identical to planned demolitions.
There's just a lot about it that doesn't make sense to me. I'm not really going to go back and forth arguing about it, though. I will be keeping an eye on this thread.
