Call me crazy. I blame terrorists: How can 36 per cent of people polled think U.S. officials knew of or participated in 9/11?

This is crazy. Despite video proof that two jumbo jets flew in the Twin Towers, there are people, many unmedicated and nor under restraint, who actually believe that 9/11 was a government plot involving the FBI, CIA and "Predator" drones - you know, the ones that are actually large toy airplanes.

Mark Steyn takes on the conspiracy theorists in his unique way:

Who is A. K. Dewdney? He's an adjunct professor of biology at the University of Western Ontario, and he has pieced together the truth about what happened on 9/11. You may be familiar with the official version: "To account for the events of Sept. 11, 2001, the Bush White House has produced a scenario involving Arab hijackers flying large aircraft into American landmarks," writes the eminent Ontario academic. "We, like millions of other 9/11 skeptics, have found this explanation to be inconsistent with the facts of the matter."

Instead, he argues, a mid-air plane switch took place on three of the jets. "The passengers of one of the flights died in an aerial explosion over Shanksville, Pa.," he writes, "and the remaining passengers (and aircraft) were disposed of in the Atlantic Ocean." Most of us swallowed "the Bush-Cheney scenario" because we were unaware that, when two planes are less than half a kilometre apart, they appear as a single blip on the radar screen. Thus, the covert switch. Instead of crashing into the World Trade Center and the Pentagon, the flights were diverted by FBI agents on board to Harrisburg, Pa., where the passengers from all three planes were herded onto UA Flight 175 and flown on to Cleveland Hopkins and their deaths. By then, unmanned Predator drones had been substituted for the passenger jets and directed into their high-profile targets. The original planes and their passengers were finished off over the Atlantic.
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The sad reality is that never before has an enemy hidden in such plain sight. Osama bin Laden declared a jihad against America in 1998. Iran's nuclear president vows to wipe Israel off the map. A year before the tube bombings, radical Brit imam Omar Bakri announced that a group of London Islamists are "ready to launch a big operation" on British soil. "We don't make a distinction between civilians and non-civilians, innocents and non-innocents," he added, clarifying the ground rules. "Only between Muslims and unbelievers. And the life of an unbeliever has no value."

Our enemies hang their shingles on Main Street, and a University of Western Ontario professor puts it down to a carefully planned substitution of transponder codes.

Read the whole thing.