A partial way to check would be to look at accounts by people who converted to Islam, especially if there weren't external incentives-- to what extent do they say they were convinced by reading the Koran, and to what extent were they convinced by knowing Muslims who impressed them or by sampling observances and finding a good fit?
Even then, Qur’an could work as the affective focus without being the source of affect, or adequately accounting for resulting extent of accumulated affect, even if contributing incrementally (not to unusual degree). There is also prestige you can't control for. The main factor must be the anti-epistemic mode that allows the affect to run out of control, not the features accompanying the process of running out of control.
(It's my first time posting an article, so please go easy on me.)
I wonder if anyone ever fully analysed the Qran and all the resources it uses to tug at the feelings of the reader? It is a remarkably persuasive (if not at all convincing) book, even if I say so myself as an ex Muslim. I've started recognizing some patterns since I started reading this site, but I'd like to know if there is a full-blown, complete, exhaustive deconstruction of that book, that is not dripped in islamophobia, ethnocentrism, and other common failures I have seen in Western theologians when applied to Islam. Not a book about "How the Qran is evil" or "How the Qran is Wrong" or "How IT'S A FAAAKE" but "How, precisely, it manipulates you". Can anyone here point me towards such a work?
And where is the markup help in this blog? I can't seem to find it and it frustrates the hell out of me when I'm commenting usual posts.