It's not that Arabs are too stupid to fly, but THESE NINETEEN were too stupid to fly. Just ask their flight instructors. Or better yet, watch the video of their flight instructors TELLING you they were too stupid to fly. The video's all over the internet.

http://www.question911.com/linksall.htm

http://www.911truthbristol.com/videos/films.html

Two links where you can download low-res videos for free. Stephen Jones, Griffin, others.