Thank you for the welcome and for the link.
I was wondering what was the point of view on this side of the fence though.
I agree that there isn't "evidence" in the strict sense of the word. I think some of the anomalies raised by CT might be real, but are generally little detail which do not invalidate the moutain of evidence contrary to their beliefs. As it was pointed out, they do not seem to even consider that reality is messy and that investigating such complex events after the fact is not a 100% fool-proof process.
So yeah, maybe the word is not evidence: I could rephrase that as "What is the biggest gap in which they can spin things?", if you prefer.
It's a difficult question -- you're basically asking us to say, "assuming they're right, make up a hypothesis for them and figure out how to support it." I've never heard a Truth Movement hypothesis that even passes the giggle test, so I have to think like a fiction writer.
I guess if I was going to make up my own crackpot theory, I'd focus on the uncoordination between investigative agencies. These were real (probably still are) and well documented. We had a number of chances to nab al-Qaeda before they put their plan into effect, and they got lucky on several scores. It would be pretty easy to spin this into something that would impress the already paranoid, particularly those who have no idea how government actually works apart from what they see in movies and on
CSI.
However, this only works with a LIHOP theory, and thus disagrees with 99% of the Truth Movement whether they admit it or not. If al-Qaeda didn't do it at all, as MIHOP requires, then the FBI and CIA would have a perfect excuse for not catching al-Qaeda beforehand.
If you restrict it to MIHOP and thus require some kind of physics or engineering "gap," then the trickiest technical issue I've had to think about was the duration of fire on the lower floors of WTC 7. Even that is not much of a challenge -- NIST covers that pretty well. I also fail to see what was so special about WTC 7 to begin with that it needed destroying. Who cries for WTC 6?
Another unanswered question is precisely why the last six seconds of FDR data from AA 77 are missing, though we've identified numerous possible explanations, we've seen it happen in other crashes, and we don't need those data to answer any other question so they're totally irrelevant; still, it would be potentially interesting to find out. Could even indicate a flaw in the FDR system that needs correcting.
Ultimately the question suffers because the narrative of events just doesn't lend itself to any credible alternative. I
explored this some time ago -- if you're willing to admit nonexistent technologies and an infinitely complex conspiracy, perhaps you
could come up with some other story, but you can't come up with one that makes a lick of practical sense. All of the Truth Movement ideas only work in isolation. Try to put it into a complete narrative, and you wind up writing yourself into a corner every time.
Hope that gives you what you're looking for. Tricky question.