How does Islam shape the way Muslims live? The religion's formal requirements are the narrow base for a far wider structure of patterns that extend the formal rules of Islam, stretching them in unexpected and unplanned ways. A few examples:
The Koran strictly bans the consumption of pork, leading to the virtual disappearance of domesticated pigs in Muslim-majority areas, then their replacement by sheep and goats. These latter overgrazed the land which led, as the geographer
Islam's unattainably high standards for governmental behavior meant historically that existing leaders, with their many faults, alienated Muslim subjects, who responded by refusing to serve those leaders in administrative and military service, thereby compelling rulers to seek personnel elsewhere. This led to their systematically deploying slaves as soldiers and administrators, thereby creating a key institution that lasted a millennium from the eighth century.
Islamic doctrine ingrains a sense of Muslim superiority, a disdain for the faith and civilization of others, which has had two vast implications in modern times: making Muslims the most rebellious subjects against colonial rule and obstructing Muslims from learning from the West to modernize.
Those scriptures also imbue a hostility toward non-Muslims which in turn generates an assumption about non-Muslims harboring a like hostility toward Muslims. In modern times, this projection has created a susceptibility to conspiracy theories which have had many practical consequences: for example, because only Muslims worry that anti-polio vaccinations secretly render their children infertile, polio has effectively become a Muslim-only scourge in 26 countries.