The title "engineer" holds more weight culturally in the Middle East than does "Doctor" as in medical doctor. I fould that to be true across the region from Egypt tp Lebanon and south into Sudan. It was especially true in Egypt as part of the "Pyramid Complex". So in looking at the number of engineers invloved in extremism it is likley that you would find a larger if not the largest number of particpants to hold some sort of engineer background. That does not establish a causal relationship.

Best

Tom