Islam conquered superior cultures; adopted their already existing philosophy and science and, today, claim them as muslim.
In every instance, as the muslim grip tightened, the excellence of the previous culture stagnated and ultimately died.
By the way, why not quote us some great philosophy, mathematics, medicine and science out of islam --- say in the last 500 years, after they ran out of cultures to destroy?
It pains me to say this, but there is a small portion of Radical Islam that seem to be very good at making, altering, and fabricated improvised explosive devices. That is a science. This revelation might seem insignificant to some of you, but to me it is the difference between a pleasant drive in the country, and a sphinchter tightening near death experience on wheels.