Yes, I think you're right Jack, sort of. Immediately after the towers fell, and the US government had to deal with the crisis, the burden of proof rested with the government to explain how it had happened. Once they did that, I agree, the burden of proof shifted to the people claiming that their story was a lie, so yeah, for the purposes of this argument I agree with Jack, not Darwyn.
Also, when I label your argument a conspiracy theory, I'm not just saying "oh you're a nut and no one should listen to you" and thus stifle the debate, I'm trying to get you to see the pattern into which you have fallen, because really, that is the only way to debate someone on the side of a conspiracy theory. I mean no offense but both of you, Sicarius and Darwyn have shown yourselves to be over and over and over again to be immune to actual evidence unless it supports your beliefs. We can't actually debate your points, because no matter what scientific analysis anyone comes up with, no matter what knowledge or proof we marshal against you, you simply will not change your mind even a tiny bit. And then we just get frustrated, and give up, and you declare victory. And then you start again, and we say "Look, you're following the typical pattern of a conspiracy theorist and you're not going to listen to anything I say!" you claim that we're trying to stifle debate! So our only hope is to get you realize what you're doing. I'm not trying to stifle debate, I'm trying to debate you, while at the same time, not wasting my time by entering into a debate with someone who will ignore all the evidence. And the only way to do that is to try to get you to see your own cognitive biases.