If we look at the evolution of Islamic religion and culture throughout the 20th and 21st centuries, it hasn’t been natural. Some deleterious mutations have occurred somewhere which have negatively impacted the Islamic societies all over the world. Social selection (or social conditioning) plays the same role in the social sciences which the natural selection plays in the biological sciences: that is, it selects the traits, norms and values which are most beneficial to the host culture. Seen from this angle, social diversity is a desirable quality for social progress; because when diverse customs and value-systems compete with each other, the culture retains the beneficial customs and values and discards the deleterious traditions and habits.