Most of the 9/11 CTs here seem to be backtracking lately, now claiming they have proffered no CTs but rather have just rejected the official account. The effort is so widespread I suspect some collusion among them. Hey ... could it be a conspiracy?
When you ask someone what they "think" happened and they hesitate to tell you what they "think" happened, they are disqualified from being taken seriously.
You walk into your house and see your TV missing, broken glass on the floor and a window that is broken, you can draw the conclusion that someone broke into your house through the window and took your TV.
That is exactly the same circumstance that we have in 9/11. We have 4 planes missing, 4 plane crashes, four hijackings, and 4 groups of passengers who were never heard from again. When someone wants to inject some sort of "unknown" into these facts, they are to be ridiculed because they are being ridiculous.