Everyone was thinking "it was a controlled demolition" or talking about Lazer beams, trying to explain that the plane was edited in, maybe the towers never even existed and were invented by the media. But in reality it was a lot simpler, the Saudis sent people to fly planes into towers. Was the "jet fuel can't melt steel beams", like, purposeful misdirection or were conspiracy theorists just too imaginative for their own good
The guy the FBI blamed for Amerithrax (not the first guy, who the press latched on to but was later exonerated, but Bruce Ivins) killed himself and the investigation only ever found circumstancial evidence with no clear motive (although they did accuse him of being a cross dresser).