like with jesus, laboring over the physical existence of a dude named mohammad (death be upon him...except that he's already dead), is missing the point.

maybe he existed, maybe he didn't. 

but, if he did exist, then the stories told about him seem to be greatly exaggerated, to say the least. as such, he is best interpreted as a character in a fictional fairy tale than a historical person, because even if the dude himself technically existed, the mohummad in the story book is essentially a complete work of fiction.