Mott the Hoople
Sweet Jane
Yeh well you don't have to be an expert to figure that out. I mean just look at most Muslim societies, what do they produce, what do they invent? Look at Saudi Arabia or the UAE, they are not much different to Ancient Rome in many ways. They are still feudal societies in the main, stuck in the 7th century never mind the 15th century.
Explain that to the Islamaphobes on here. As I've pointed out the Islamic nations that are modern Republics do not have the scope of the problem with religious radicalization. It's the ones that are still feudal societies which do and there it is entrenched cultural conservatism which prevents them from modernizing.