That's a fascinating paper. There are a couple of issues I take with it. Their dismissal of recruitment of engineers because they use them recklessly in terror

That's a fascinating paper. There are a couple of issues I take with it. Their dismissal of recruitment of engineers because they use them recklessly in terror attacks doesn't seem to hold much water. If They were recruited on the promise of heaven by Jihad, then logically, they would want to die by Jihad. And the small sample size, plus their own mentioned Saudi Exception seem to flaw their own paper, even to them. But it's still fascinating and a great paper, thank you for sharing! Plus the over representation of both Nazis and Islamist terrorist groups is fascinating. I'm completely geeked out! Thanks again!