Muslims have made great strides in medicine such as:
The precise number of strokes using a dull blade to whack off a head of an infidel
They proved it is medically impossible to cross breed with goats
They proved you can intermarry within your gene pool for six centuries and still have something that resembles a human being, though mentally deficient.
Your penis does in fact not disappear when you shake the hand of a infidel or use his comb
These and other great strides in civilization brought to you by Mo' and his merry band of madman.
...yet they keep repeating the experiment...