You should probably mention A K Dewdney
WP, well-known computer scientist and September 11 crackpot. Dewdney conducted a "
study" purporting to prove that cell-phone calls from airliners are virtually impossible, by flying around the London, Ontario metro area in a light plane and attempting to place calls. He also wrote an
article claiming the calls could have been faked by agents using real-time voice-morphing technology, and that said agents might have flown the flights in question previously and engaged the passengers in conversation in order to learn personal details that would convince relatives that the calls were genuine. He also insinuates that the relatives ignored inconsistencies in the calls due to wishful thinking.
Dewdney has also developed an "inside-job" scenario, "
Operation Pearl," that claims only about 36 people would have been required to stage the attacks.
Finally, Dewdney and one of his cohorts claim
here that the Pentagon damage does not fit an airliner crash, and he has attacked the Purdue University computer simulation on frankly silly grounds (such as not modeling the tail structure), under color of his expertise in computer science. [disclaimer]I have a BA in American and European history from Purdue, and I'm currently attending a regional campus part-time in mechanical engineering[/disclaimer]