Big history must reckon with the specificity of human experience, even if such an orientation yields more modest conclusions. The continued popularity of the idea of the Muslim world cannot be attributed to the elite alone. Today’s public spheres are saturated with political novices and seasoned politicians, academics, curious observers, and a vast range of nominally interested pundits, all of whom, it seems, have something to say about Muslims and Islam. Comment has never been freer and more pernicious. Any and all opinions find expression through more diffuse communication technologies than ever before. There are no guarantees that the provenance of a concept confines its use within the social networks that may have once given the concept meaning. If Aydın has written the history of an idea’s emergence, to what extent must its endurance account for a wider social field?