If my memory serves me correctly, Atta wasn't all that bright. He failed his Engineering studies and decided on mass murder to vent his frustrations.
“Atta wasn’t all that bright. He failed his Engineering studies and decided on mass murder to vent his frustrations.”
maybe so, but he sure caused a lot of damage.
this is the more typical abdul factor terrorist effort
http://en.wikipedia.org/wiki/2007_Glasgow_International_Airport_attack