Why do so many jihadis have engineering degrees?

Long but interesting article on why so many radicalized individuals have an engineering background:

That takes Hertog and Gambetta (the researchers who conducted the study)  to the thorny question of “mindsets for extremists.” Different types of people are attracted to different kinds of extremism—engineers mostly on one side, social scientists and humanities grads on the other—and the authors went in search of traits found in both secular and jihadi extremists as well as among engineers. Three stand out among conservatives in general in recent psychological research: disgust (or the felt need to keep one’s environment pure, which can underpin everything from homophobia to xenophobia); the “need for cognitive closure” (a preference for order and certainty that can support authoritarianism); a very high in-group/out-group distinction.

These are present in particularly high concentration among Nazis and Salafists alike, while European surveys show engineers to be consistently more conservative than other students: moderately right-wing, anti-immigration and tough on crime. Whether the discipline makes the man—it’s worth noting engineering, like the virtually women-free world of right-wing extremists, is male-dominated—or the man seeks the discipline, Hertog is not prepared to say, but the correlation is undeniable. And so is what it points to: contrary to what seems obvious, religious faith does not so much drive Islamist terror as provide its cover.

Why do so many jihadis have engineering degrees?