Influence is: any person who has the power (be it cultural, ideological, financial, political or otherwise) to make a change that will have a significant impact on the Muslim world. Note that the impact can be either positive or negative, depending on one’s point of view of course. The selection of people for the publication in no way means that we endorse their views; rather, we are simply trying to measure their influence. The influence can be of a religious scholar directly addressing Muslims and influencing their beliefs, ideas and behaviour, or it can be of a ruler shaping the soco-economic factors within which people live their lives, or of artists shaping popular culture. The first two examples also point to the fact that the lists, and especially the Top 50, are dominated by religious scholars and heads of state. Their dominant and lasting influence cannot be denied, especially the rulers, who in many cases also appoint religious scholars to their respective positions.