In particular, in the third book of the five book trilogy (things got out of hand), entitled, "God, the Universe, and Everything", he explains how a small race of people in a small planet in a dust cloud with their single sun, once learned about the rest of the Universe and how it had to go. So they, the Krikkiters, built war space ships and war robots and proceeded to eliminate every other civilization.
Judiciary Prag, at the trial, reasoned that they were never going to stop, always coming at you. Thomas Friedman has an editorial on the NYT site explaining how little Saudis in school (not the rich ones who are sent overseas to schools) are being taught that Muslims must always stick together and always consider an infidel to be an enemy.
I think that Douglas Adams had a model for modern Islam that is becoming too difficult to deny. And Friedman made the point that we need to tell the truth about Islam to Islamics and to ourselves. Then we and they must decide what to do about it.