I've said in an earlier review that every Rodney Stark book is a collaboration between two authors
- one is a hard-minded social-scientist/historian, skeptical of received wisdom just because it's what people have always believed, always looking for new ways to test hypotheses and quantify claims
- the other is a Christian (and specifically Catholic) apologist, who will not lie, and will admit to issues when those issues are glaring, but who *will* always find a way to put the best possible gloss on a confrontation between Catholicism and the rest of the world.
To these two, we now have added a "Libertarian" collaborator, who's explanation for most social phenomena is rooted in classical liberalism and the ideas of incentives, choices, monopoly and such like.
The result is books that are usually interesting, with many provocative theses and interesting explanations, but also with some glaring holes where the skeptical Stark was apparently uninterested is pushing some obvious contradictions or consequences of his various claims.
On the specific side a few of these that I found noteworthy include
- does the claim about low religiosity in monopoly religion countries hold for Islamic countries? Islam seems a good proving ground for his various claims, but this (IMHO obvious) tactic was never pursued, not even at a rough approximate level, let alone at the statistical level we've seen in his some of his works (like Cities of God).
- there seems to be something of a contradiction between his dual claims that religiosity in the Middle Ages was superficial and rare, and that the Crusades were motivated by genuine religiosity of all involved.
Ultimately, I think, the reason he's having trouble with these contradictions is that he never makes clear quite what a religion (let alone Christianity) means for him; rather he uses a variety of proxies that he considers relevant but which others might not.
One can consider a religion to be a *specific* set of beliefs (in which case many of the Christians he counts around the world as being part of the Christian Triumph) would not be considered Christians by the orthodoxy of the Nicene Creed or suchlike. Strangely, he fully understands this point in the context of Medieval Europe, but fails to see that the exact same point holds for current Christianity, whether in its "spiritual but not religious" forms, in many of its North American Jesus-based forms, or in many of its African forms.
One can consider a religion to be a vague sort of woo about the world, a belief in various sorts of superstitions and magic. By that light, I suspect the Secularization of Modernity predictors were, in fact, correct. It may be hard to believe that the US and Europe are in fact ration societies, but you need to compare them with societies that are still steeped in the past, many in Africa, some in Asia. People in the US will talk all sorts of woo, but they will not (most of them, anyway) actually kill animals, cast spells, leave curses in various locations, and so on. People in Africa or, eg, Myanmar, *do* do that, with some sort of real expectation of results; Europe was doing the same at around, say, 1600, much less so in 1800, very little by 2000.
Or one can consider religion to be a set of cultural practices, the way we do things like births, marriages, deaths. Stark, for example, puts great score on how often people pray as a measure of their Christianity; I'd be much more convinced if we had any sort of metric as to how much people actually expect such prayers to have efficacy, as opposed to simply being "the way people in my group cope with, and work through, difficult situations". Yes, people may pray for their marriage – but most of them also see a marriage counsellor, and expect more from the latter than the former. What I do not see in the US is the *behavior* associated with honestly believing in what's claimed for Christianity as was the case in earlier Europe, or is the case in some more "primitive" (or if you prefer "authentically religious") societies today. For example I don't see the sort of acceptance of random misfortune that used to be ascribed to God's Will in the past; even the supposedly most devout seem happy to blame doctors and the medical system when their 90+ yr old parents die in hospital, and there's precious little acceptance in popular culture of the idea that we all have to die, might as well accept it as an eventual reality.
All this matters because, ultimately, I don't find Starks ultimate claim convincing. Yes, he may be correct that the number of people calling themselves Christians is large and growing larger. That's a good number to trumpet if you want to score rhetorical points, not if you want to understand.
Scott Alexander has an essay called _How the West was Won_ in which he points out that most of the people complaining about "the West" in various ways start by being confused between "Western" or "European" Culture and Modernity; and their complaints become incoherent because they do not understand this distinction. It feels like Stark is making the same mistake, calling various sets of superstitious practices a religion, and specifically Christianity, when the two are only marginally connected.
This matters because one of Stark's theses is that it was Christianity that gave us the particular rationalistic, law-based outlook that resulted in Science, Liberal Democracy and the rest of the Modern Package. That argument doesn't work, or at least becomes incoherent, when you continually elide the distinction between one particular Christianity (call it something like Traditional Upper Class Catholicism) and every manner of woo and superstition that calls itself Christianity today.
I think there's scope for an author with Stark's best characteristics to cover this same material (historical and modern) but to do so without the Catholic Apologist in the background; better would be someone who appreciates the history of Christianity but also of other religions, is skeptical to all of them, and who is willing to differentiate between, and track the differing saliencies of, concepts like particular specific beliefs (Nicene Creed etc), general degree of woo, actual belief in this woo (as opposed to mere cultural behavior), tribal affiliation, identifying with "Christianity" more as a statement about particular ethical or even socio-cultural beliefs (gay marriage, abortion, ..., general "conservative and against modernity") than as about religious beliefs, etc.