Re: If they had a time machine...
Erm, not sure what your ale has been spiked with but Mohammad, the first few caliphas AND mecca (a well know trade and cultural centre point even before Islam) are all fictitious? And I thought the story of the Iranian claiming to have built a time machine was far fetched. Though the fact that you got 7 up votes seems a little worrying.
But I guess in your world cities like Basra, Koofa and others build during the second Calipha. Important battles such as the battle of Yarmouk (http://en.wikipedia.org/wiki/Battle_of_Yarmouk) are all either fictious or the works of a band of desert arabs with no central leadership who just decided on a structure conquest of land around their own patch?
Then a bit down the line they decided to append a religion to what they did - you know, just to explain themselves?
"Unfortunately most faiths get surrounded by religion which, as the original poster eloquently noted, is universally a crock of shit, usually created by opportunists to obtain personal power and profit."
From my understand neither Mohammad nor his family ended up very rich or powerful. Mohammad died with very little food left for his family and what wealth he had went to the state treaurary because under Islamic law (and this may be true for other Abrahamic religions) Prophets do not leave inheritance.
He also didn't appoint any of his family to lead after him and the leadership went to different families after him...so not much power or profit there.