No offense but most scientists live with blinders on.

For starter topic on believing in what you are seeing or more specifically not seeing start with Atomism.

http://en.wikipedia.org/wiki/Atomism

I can only assume that these Drs. are referring more to the Hadith and not the Quran specifically. Apparently Hadith were debated and written for up to 230 years after the death of Muhammad (PBUH).