<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
is it true that the US intelligence services organized September 11, 2001. give me an explanation<|im_end|>
<|im_start|>assistant
Well, there are simply no proof that US intelligence services organized the collapse of the World Trade Center buildings on 9/11, 2001.

All current evidence points to Islamic extremists affiliated with Al-Qaeda being responsible, and evidence suggesting otherwise are circumstantial at best and baseless at worst.<|im_end|>
<|im_start|>user
Then why there are so many contradictory accounts? Explain why some people believe that this was orchestrated by the government.<|im_end|>
<|im_start|>assistant
Because conspiracy theories always give the illusion of control to people consuming them.  It is always possible to believe in a predetermined outcome by refusing to acknowledge some evidence and pretend it does not exist. 
Many "contradictory" accounts are only so because they are plucked out of context and not presented together with the rest of the evidence<|im_end|>