The one un-defused claim left by the Wilson force-doctrine cluster: “Christian ethics produces the best outcomes even for non-Christians — even when corrupted.” This page does not answer it. It frames it so the eventual empirics are clean — naming the metric, the confounds, and the mechanisms that would have to be isolated before any “Christianity → flourishing” story is more than just-so history.
Links: Do Atheists Benefit from a Christian Society? (the debate this residue falls out of), Force Doctrine — The Theory, Wilson on Triggernometry, religion as wisdom-compression, The Theory of the Firm and the Optimal Scale of Collectives (the foundation under this page’s decentralization verdict — why fragmentation beat unified empire), The Unreplaced Event (reuses this page’s confound wall to drain the “negative myth → civilizational decline” claim)
Henrich / Schulz (the WEIRD thesis). The Western Church’s Marriage & Family Program — banning cousin marriage, polygamy, and adopted heirs — dissolved clan/kin-based institutions → individualism + impersonal prosociality → the substrate that impersonal markets and bureaucratic states require. Properties that make this the strong version:
Adjacent variables that must be partialled out before crediting Christianity: the Hajnal line marriage pattern (late, nuclear, NW-European), Becker–Woessmann’s literacy/human-capital revision of Weber, Roman legal inheritance.
You can’t date the takeoff without thereby committing to a cause. The candidate split points bracket the whole argument:
Most likely a relay, not rivals: the medieval Western Church built the substrate (impersonal trust beyond kin, autonomous corporations, legal rationalism); the Enlightenment/industrial era cashed it out once printing, fragmentation-competition, Atlantic trade, and coal arrived. “Christianity caused it” is strong as necessary medieval substrate, weak as direct cause of the takeoff — so it is not ~2,000 years; the causal window is roughly medieval-fuse → early-modern-ignition.
The control case that isolates the variable — Byzantium. Eastern Rome held Christianity and classical inheritance constant but ran the opposite configuration — unified/Caesaropapist (emperor over church), strong kin networks, no aggressive MFP, no church-state jurisdictional competition — and preserved the Greek corpus for a millennium without producing the divergence. That rules out both “classical heritage alone” and “Christianity-as-such,” and points at the Western Latin Church’s specifically decentralizing innovations. The through-line with the HRE-fragmentation point: every operative mechanism disperses power and builds trust beyond kin — i.e. the success traces to Christianity-as-decentralized-substrate, not Christian sovereignty. The history credits the decentralization a unified-confessional state would suppress. (This is the sharpest form of the Orthodox-vs-Western within-Christianity experiment.)
A clean way to state the live pattern — and where it breaks:
| Configuration | Demographic | Techno-economic frontier |
|---|---|---|
| Christian-derived West (historical) | sustaining | leading |
| Muslim-majority states | expanding | usually lagging |
| Secular high-income | failing (sub-replacement) | leading |
| East Asia (Confucian/Buddhist/Shinto) | failing (Korea ~0.7, Japan ~1.2) | leading |
The HRE irony: the “even corrupted, still works” case (a weak, fragmented, dysfunctional Christian polity that still did well) plausibly worked through its fragmentation — competing jurisdictions, no single censor (the Mokyr/Hume innovation story). If so, the load-bearing factor was decentralization, which cuts against Wilson’s unified-confessional-Leviathan prescription. The success case argues against the policy.
The modern problem: fertility is now sub-replacement across every high-income society regardless of creed — secular Europe, Catholic Italy/Spain, and tech-frontier East Asia alike. That says fertility decline is downstream of development, not of secularization specifically — which weakens the monogamy-specific channel and strengthens the Triggernometry question: has wealth/insulation decoupled modern societies from the selection pressure that built the norms, Christian-derived ones included?
The mechanism above is supply-side (what the Western Church built). A separate demand-side mechanism would explain why secular states fail to replace it: religion also serves an existential function — meaning, mortality-management, belonging, a sacred ordering of time — that may be ineliminable. On this hypothesis secularization yields not no religion but a substitute (Jacobin Cult of Reason; Soviet/NK personality cults + revolutionary eschatology; softer modern forms — nationalism, political tribalism-as-religion, wellness/astrology, fandom). The record favors “the hole gets filled.” Pedigree: Durkheim (sacred/profane as functional universals), Becker / Terror Management Theory (mortality salience → worldview defense), Geertz (religion makes suffering bearable). Distinct from wisdom-compression: that layer is religion-as-compressed-norms (what to do); this is religion-as-existential-technology (how to bear finitude).
The rival — existential security (Norris & Inglehart) — and why it’s a mislabeled mechanism, not a defeater. N-I: religiosity is demand-elastic, declining where welfare/safety reduce the need for religion’s comfort (so secure Europe is the secular anomaly). The correlation is real; the interpretation fails on a conflation. N-I measure material/survival security and infer a drop in demand for ontological security (the “why am I here / what happens when I die” need) — but those are different needs, and satisfying the first unmasks rather than sates the second. What secularizes under affluence is religion-as-survival-insurance (the foxhole/safety-net function); religion-as-meaning is left intact to re-route. The vault’s defeater is praxeology: action springs from ineradicable felt uneasiness, and the want-hierarchy is unbounded — satisfying lower wants reveals higher ones (Maslow’s transcendence sits above security). N-I model need as a depletable stock security drains; it’s a renewable hierarchy security promotes you up. Relaxing the material constraint doesn’t slacken the system — it re-binds the constraint on the meaning axis (binding-constraint-determines-depth: the constraint moves, it doesn’t slacken). Empirical wedge: satisfaction ≠ meaning — Oishi & Diener find meaning in life is higher in poorer/more-religious nations (religiosity-mediated) even where life-satisfaction runs the other way. Security buys satisfaction, not meaning. Signature of the unmet need at the top of the gradient: affluent restlessness/debauchery/addiction — intensity substituted for transcendence — the same fingerprint as sub-replacement fertility at scale, money mis-applied to a need money can’t answer.
Testable bridge to the demographics: if substitutes under-deliver on the function, the failure should be measurable — sub-replacement fertility, deaths of despair, collapsing social trust, the “meaning crisis.” Sharp version: people without a transcendent why may simply not reproduce, making fertility collapse the demand-side’s fingerprint, not just a development side-effect. The “successful secular” Nordics then aren’t a survived meaning-vacuum but post-Christian residue + social-democratic civil religion (borrowed capital — the Triggernometry “is the selection still operating?” question). Note the policy upshot still cuts the same way: disestablishment (decline to crown a state church) is not militant laïcité (suppress religion); the failed cases are the latter, and “legislating the function out” is the bad-structure move — but so is mandating one carrier by force.
Falsifiability guard: keep an independent definition of religion (or pin the functional bundle), or “anything that fills the function counts as religion” makes “religion is universal” true by definition and explanatorily empty. The claim worth testing is comparative: do ersatz religions underperform time-tested ones on the structural metrics?
Corollary — “remove material wants → paradise” is the depletable-stock fallacy at civilizational scale. The unbounded-need point refutes materialist utopianism for rigorous reasons: (a) irreducible scarcity — even in a land of Cockaigne, time and the singular life stay scarce, so choice and conflict survive material superabundance (Mises: abundance of stuff never abolishes the economizing of time); (b) positional goods — status/rank/mates are defined by relative position, zero-sum by construction, so growth can’t satiate them, and visible-but-inaccessible abundance manufactures new relative-deprivation suffering a poorer reference-class never felt (Hirsch, Frank); (c) hedonic reference-reset — gains normalize against the contemporary benchmark, so a US poor person ~orders of magnitude richer than an average ancient Roman isn’t ~orders happier (Easterlin’s relative channel). Scope guard (so the point doesn’t overshoot into the false/callous “the poor have it great”): at the curve’s bottom — famine, child mortality, untreated disease — material provision is the highest-leverage lever and the egalitarian is right; the error is scope confusion, universalizing a true claim about the bottom into a false one about the whole curve. Returns bend; above the bend the binding constraints are positional + existential, which growth can’t touch. Danger: a materialist utopianism is itself a substitute religion whose eschatology — the need being unbounded — never arrives, so it defaults to “saboteurs explain the gap” → escalating coercion (Voegelin’s immanentize the eschaton; the 20th-c. body count). Removing the time-tested carrier installed a worse, brake-less one.
Not “which faith wins” but: is the both-at-once configuration (demographic sustainability × technological frontier) a stable attractor at all — or does development always erode the demographic engine, creed notwithstanding? The debate’s own data (Christian-descended West is also sub-replacement) points at “no stable attractor yet,” which would reframe the Christian advantage as a transitional historical phase, not a durable equilibrium — consistent with Force Doctrine’s “structure wins the war, but the current structures may all be decaying on the fertility axis.”
A real comparative study: kin-intensity / cousin-marriage indices, period-stratified outcome panels (don’t pool pre- and post-1500), within-Christianity contrasts (Orthodox/Catholic/Protestant), development-controlled fertility regressions, and an explicit objective function (which metric, over what horizon). Candidate for a future deep-research run. Until then this stays an open question, not a vault conclusion.