worldbuilding-frameworks

name

worldbuilding-frameworks

description

A framework-neutral, example-rich reference well for building grounded worlds — the toolbox the world-builder agent draws on. Covers physical geography (plate tectonics, Köppen/Whittaker/Holdridge climate, biomes, hydrology, resource genesis & spread), ecology & evolution (trophic webs, niches, island biogeography, speciation, speculative-biology creature design), economic systems (subsistence→market, Polanyi's forms of integration, money & debt, trade networks, scarcity/surplus), political & power structures (Service/Fried typology, Weber's authority, Mann's IEMP, Ibn Khaldun, state formation), religion & mythology (Campbell's monomyth, Dumézil's trifunctional hypothesis, pantheon design, real-vs-believed), magic-system design (Sanderson's Laws, hard/soft, cost & limit, sympathetic magic), social structure & kinship (descent, the six terminology systems, marriage & residence, stratification, honor/dignity/face), linguistics & naming (phonotactics, morphological typology, toponymy, conlang levels), historical causation & the rise/fall of societies (secular cycles, elite overproduction, complexity collapse, longue durée), and technology levels (three-age system, energy-capture, tech trees). Use when settling any layer of a world — law, community, planet, history, or present systems — or whenever an invented element needs a real-world analog to make it plausible. Grounds the invented in the real. Deep reference files live in references/.

Worldbuilding Frameworks — the reference well

Purpose

This is the toolbox the world-builder agent draws on to author grounded worlds. It is a vast well to draw from, not a single prescribed method: many frameworks per domain, presented neutrally, each with its real-world provenance so an invented world can be justified by an earthly analog rather than set arbitrarily. It exists to serve the world workflow in docs/ (premise → universal law → broader community → planet → history → present systems), supplying the analogs and structures that make each layer plausible and give it teeth.

Discipline this skill serves (from the project's world docs):

• Ground the invented in the real. A made-up climate, economy, faith, or kinship system earns its place by tracing to a real framework and analog — never "poverty = high," always "poor because that war, on that exhausted soil."
• Every "yes, X exists" carries a Limit (teeth) and an Epistemic status (known vs believed). These frameworks supply the plausible limits — real economies, ecologies, and powers all have them.
• Depth rule. Reach for the framework that fits the hinge you're authoring; don't simulate a whole planet's geology to place one mountain pass.
• Framework-neutral. Where a domain has rival schools (geographic determinism vs contingency; alliance vs descent theory; hard vs soft magic), the well holds all of them and names the tension — you choose per world, per premise.

How to use this well (the method)

1. Locate the layer. Which world-workflow step are you on — law, community, planet, history, present systems? Each reference file below is tagged to the step(s) it feeds.
2. Pull the fitting framework, not the whole shelf. Take the one that fits this hinge. A framework you don't lever is a framework you don't author (the depth rule applies to research too).
3. Instantiate, then perturb. Most frameworks below are schemas (dimensions a system fills) or archetypes (templates to assign-and-perturb). Use the schema to know what must be decided; use an archetype as a fast starting point; perturb it toward this premise. (Same assign-and-perturb pattern as the character model's models.)
4. Chain across layers. Frameworks compose downstream: plate tectonics → orogeny → rain shadow → biome → where crops grow → where cities sit → what a war is fought over. Follow the causal chain; that chain is the grounding.
5. Keep the two rival stances live. For any contested framework (determinism vs contingency most of all), hold both and let the premise decide. Grounding means plausible, not inevitable.
6. Cite the analog in the bible. When you invent, name the real framework/analog it rests on, so the world-state is auditable and the critic can check it.

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The framework index (organized by reference file)

Each entry is name — one line. Depth treatments are authored in references/ (see the note at the end).

1. physical-geography.md — the stage's bones (feeds: planet)

• Plate tectonics — drifting plates whose convergent / divergent / transform boundaries place mountains, rifts, volcanoes, and earthquakes; the master control on terrain.
• Wilson cycle — the ~supercontinent open-and-close rhythm that assembles and rifts landmasses over deep time.
• Orogeny (mountain-building) — how collision and subduction raise ranges, which then gate movement and wring rain from the sky.
• Hotspots & mantle plumes — fixed deep-mantle sources that string volcanic island chains across a moving plate (the Hawaii pattern).
• Isostasy & erosion — crust floats and rebounds; uplift fights weathering, setting how long highlands and canyons last.
• Atmospheric circulation (Hadley / Ferrel / Polar cells) — the three-cell engine that puts rainforests on the equator and deserts near 30° latitude.
• Coriolis effect & prevailing winds — planetary rotation bends winds (trade winds, westerlies), setting which coasts are wet and where storms track.
• Orographic lift & rain shadow — windward slopes soak, leeward slopes starve; the reason a desert sits behind every big range.
• Ocean currents & thermohaline circulation — gyres and the global conveyor redistribute heat, warming some coasts and chilling others at the same latitude.
• Köppen–Geiger climate classification — the standard A–E (tropical / arid / temperate / continental / polar) grid from temperature and precipitation thresholds; the workhorse climate map.
• Trewartha modification — a Köppen refinement that better separates mid-latitude climates; useful when the temperate zone is load-bearing.
• Whittaker biome diagram — biomes plotted directly on mean-temperature × annual-precipitation axes; the fastest "what grows here" lookup.
• Holdridge life zones — biomes from biotemperature, precipitation, and evapotranspiration ratio; more physically grounded than Whittaker for ecological modeling.
• Milankovitch cycles — orbital eccentricity/tilt/precession drive ice ages and long climate swings; the clock behind deep-time climate history.
• Biome catalogue — the standard terrestrial biomes (tundra, taiga, temperate forest, grassland, savanna, desert, tropical rainforest, etc.) and their defining life-form signatures.
• Drainage basins & the hydrological cycle — watersheds, divides, and the evaporation→precipitation→runoff loop that fills every river and lake.
• Strahler stream order & Horton's laws — the branching arithmetic of river networks; why big rivers are rare and tributaries many.
• Fluvial / karst / glacial / aeolian landforms — the sculptors: rivers cut valleys, water dissolves limestone caves, ice carves fjords, wind builds dunes.
• Coastlines & sea level — emergent vs submergent coasts, estuaries, deltas, and how sea-level change makes or drowns harbors and land bridges.
• Ore genesis & resource concentration — why metals cluster: hydrothermal veins at plate boundaries, magmatic segregation, banded iron formations, placer deposits.
• Fossil-fuel & mineral formation — coal from swamps, oil from marine plankton, salt/evaporites from dried seas; the deep-time recipes for buried wealth.
• Resource spread (uneven distribution) — the worldbuilding principle that scarcity-here / abundance-there is the conflict substrate: geography matters dramatically only when what's valuable is unevenly placed.
• Pedology (soil types & fertility) — loess, alluvium, laterite, chernozem; why some valleys feed empires and some highlands never do.
• Biogeographic realms & Wallace's Line — deep faunal provinces separated by ancient barriers; why continents have distinct casts of creatures.

2. ecology-and-evolution.md — what lives here, and why (feeds: planet — ecology & creatures)

• Natural selection & adaptation — differential survival of heritable variation; the engine that fits every organism to its niche and every niche to its place.
• Sexual selection — mate choice and competition drive ornament, display, and dimorphism (the peacock's tail); traits costly for survival but rewarded in reproduction.
• Ecological niche & competitive exclusion (Gause) — no two species occupy the identical niche indefinitely; competition forces divergence or displacement.
• Trophic levels & the 10% rule (Lindeman) — energy pyramids: producers → herbivores → carnivores, losing ~90% per step; why apex predators are few and large.
• Food webs & keystone species (Paine) — some species hold a whole web together; remove them and it collapses or flips (the wolf/otter cases).
• Trophic cascades & ecosystem engineers — top-down control and habitat-makers (beavers, coral, earthworms) that build the stage other life depends on.
• r/K selection theory — the fast-many-cheap-offspring vs slow-few-invested strategy axis; predicts life-history from environment stability.
• Carrying capacity & logistic growth — the ceiling an environment imposes; populations overshoot, crash, and oscillate around it.
• Lotka–Volterra predator–prey dynamics — coupled boom-and-bust cycles between hunter and hunted; the math of population rhythm.
• Island biogeography (MacArthur & Wilson) — species richness balances immigration against extinction by island size and isolation; the theory behind endemics and refugia.
• Adaptive radiation — one lineage explodes into many forms to fill empty niches (Darwin's finches); how a barren world gets populated fast.
• Convergent evolution — unrelated lineages evolve similar solutions to similar problems (eyes, wings, streamlining); the grounding for plausible alien-but-familiar creatures.
• Coevolution & the Red Queen — predators and prey, parasites and hosts, flowers and pollinators locked in escalating mutual arms races.
• Speciation (allopatric / sympatric) — how one species splits into two, usually by geographic isolation; the source of biodiversity across barriers.
• Founder effect & genetic drift — small isolated populations diverge by chance, not just selection; why islands and refugia breed oddities.
• Punctuated equilibrium (Eldredge & Gould) — long stasis broken by rapid change; the tempo model behind sudden faunal turnovers in the fossil record.
• Mass extinction & recovery — the big resets (impact, volcanism, anoxia) that clear the board and hand survivors an open world; deep-time hinges for history.
• Latitudinal diversity gradient — life piles up toward the tropics and thins toward the poles; sets where ecosystems are rich vs sparse.
• Bergmann's & Allen's rules — cold-climate animals run larger and stubbier-limbed to conserve heat; simple levers for climate-plausible creature design.
• Biomimicry & functional morphology — designing a creature from its job: the square-cube law, gait, metabolism, and sensory apparatus its niche demands.
• Speculative biology (Dixon lineage) — the After Man / All Tomorrows tradition of rigorously extrapolated invented life; the discipline of making a monster evolutionarily earned, not arbitrary.

3. economic-systems.md — the material base (feeds: present systems — economy; planet — resource stakes)

• Modes of subsistence — foraging → horticulture → pastoralism → intensive agriculture → industry; the ladder that gates population, surplus, and social complexity.
• Surplus & the origin of complexity (Childe) — no storable surplus, no specialists, cities, or ruling class; the Neolithic and Urban "revolutions" as thresholds.
• Substantivism vs formalism (Polanyi) — is the economy embedded in social relations or a self-regulating market? The stance that decides how your economy even works.
• Polanyi's forms of integration — reciprocity (symmetry), redistribution (a center), and market exchange (price-making) as the three ways economies cohere.
• Sahlins' reciprocity spectrum — generalized (kin, no ledger) → balanced (equivalent return) → negative (strangers, haggling and theft); moral distance made economic.
• Gift economy (Mauss) — the obligation to give, receive, and repay; prestige and alliance carried by objects, not cash (the Kula ring, the potlatch).
• Prestige-goods & sumptuary economies — wealth as status objects and their controlled display; who may own or wear what, and the power in gatekeeping it.
• Emergence & theory of money — barter's double-coincidence problem; commodity money → coinage → fiat; metallism vs chartalism as rival accounts of what money is.
• Debt as social relation (Graeber) — credit and obligation predate coinage; debt, bondage, and jubilee as engines of power and revolt.
• Scarcity, supply & demand — price as the meeting of what's wanted and what's available; the base logic every market runs on.
• Comparative advantage & division of labor (Ricardo, Smith) — specialization and trade make everyone richer; the reason regions and peoples become interdependent.
• Trade networks & routes — Silk Road, Trans-Saharan, Indian-Ocean monsoon trade, the Hanseatic League; how goods, wealth, disease, and ideas move along terrain-gated corridors.
• Central place theory (Christaller) — market towns arrange in a nested hierarchy by the range and threshold of goods; the geometry of where settlements sit.
• Malthusian trap — population outruns food until famine, war, or plague resets it; the ceiling on pre-industrial growth.
• Boserup's intensification — population pressure drives agricultural innovation (the inverse of Malthus); the pressure-valve that sometimes breaks the ceiling.
• Property & surplus capture — who owns land, labor, and capital, and who takes the surplus (communal / feudal / private / state / temple); the source of class.
• Labor organization — free / serf / slave / guild / wage / caste; the terms on which work is compelled or sold, tying economy to law and custom.
• Economic archetypes — subsistence-agrarian · feudal-extraction · mercantile-market · command-redistribution · guild-craft · (magical-production, if law permits); assign-and-perturb templates.
• The three dramatic drivers — what's scarce (the director's levers), who controls the surplus (class → factions), who depends on whom (trade leverage: embargo, monopoly, debt).

4. political-and-power-systems.md — order and its structure (feeds: present systems — governance, factions; history — state formation)

• Service's sociopolitical typology — band → tribe → chiefdom → state; the standard evolutionary ladder of political scale and centralization.
• Fried's typology — egalitarian → ranked → stratified → state; a complementary axis keyed to inequality of access, not just scale.
• Weber's three types of legitimate authority — traditional (it's always been so), charismatic (the extraordinary leader), and legal-rational (rules and office); why people obey.
• The state as monopoly on legitimate violence (Weber) — the definitional core of a state; who may use force, and what it means when that monopoly breaks.
• Aristotle's six regimes — monarchy/tyranny, aristocracy/oligarchy, polity/democracy; the rule-by-one/few/many grid crossed with good/corrupt.
• Polybius' anacyclosis — the cycle of regimes decaying and revolving (monarchy → tyranny → aristocracy → oligarchy → democracy → mob → monarchy); constitutional decline as a wheel.
• Ibn Khaldun's asabiyyah — group solidarity rises on the hard frontier, conquers the soft center, then dissolves in luxury over ~three generations; the classic dynastic rise-and-fall engine.
• Montesquieu's separation of powers — dividing legislative, executive, judicial to check tyranny; the architecture of balanced government.
• Mann's IEMP model — social power flows through four autonomous networks (ideological, economic, military, political); no single engine of history, but their contingent interplay.
• Lukes' three faces of power — power as winning decisions, as setting the agenda, and as shaping what people even want; visible, hidden, and invisible control.
• Carneiro's circumscription theory — states arise where population is hemmed by geography or rivals and can't flee, forcing submission; a materialist origin-of-the-state.
• Tilly's bellicist theory — "war made the state and the state made war"; military competition drives taxation, bureaucracy, and centralization.
• Wittfogel's hydraulic hypothesis — large-scale irrigation demands a managerial despotism ("Oriental despotism"); contested, but a clean water-power link.
• Segmentary lineage & acephalous order (Evans-Pritchard) — societies that hold together and wage feud without any central authority; "me against my brother, my brother and I against our cousin."
• Patron–client & principal–agent structures — power as webs of personal loyalty, patronage, and delegation; how rule actually runs beneath the formal chart.
• Divine kingship (Frazer) — the ruler as sacred, embodying the land's fertility and sometimes ritually killed; sovereignty fused with religion.
• Governance & legal archetypes — theocratic-code · imperial-statute · feudal-obligation · tribal-elder-law · common-law-precedent · clan-feud/honor · mercantile-contract; assign-and-perturb templates.
• Faction structure (collective character) — a faction as identity (fault-line) + interest + resources + status + inter-faction relations; where society's tensions become agents and the director's primary lever-source.

5. religion-and-mythology.md — the sacred, structured (feeds: universal law — metaphysics; present systems — religion-as-lived; history — belief as driver)

• The real-vs-believed axis — the project's Epistemic check applied to faith: is the religion true (real gods, operative fate) or sincere false belief? The single fork that makes a praying character talk to someone or to nothing — and simulated identically either way.
• Types of religious system — animism, polytheism, henotheism, monotheism, dualism, pantheism, ancestor worship; the structural menu a faith is built from.
• Pantheon design — theogony, divine domains and portfolios, syncretic mergers, and god-triads; building a coherent divine cast (and the Dumézil pattern below often underlies it).
• Dumézil's trifunctional hypothesis — Proto-Indo-European myth and society split into three functions: sovereign/priestly, warrior, and producer/fertility (Odin–Thor–Freyr; the priest/warrior/commoner castes).
• Campbell's monomyth (the Hero's Journey) — departure → initiation → return as a claimed universal narrative deep-structure; powerful and notoriously over-applied — hold it with its critics.
• Campbell's four functions of myth — metaphysical (awe), cosmological (a world-image), sociological (sanctioning an order), and pedagogical (how to live); what a mythology does for its people.
• Lévi-Strauss's structuralism — myth as the working-out of binary oppositions (raw/cooked, life/death) mediated toward resolution; myth as a logic-machine.
• Durkheim's sacred/profane — religion as society worshipping itself; the sacred is what the group sets apart and forbids, binding it into one moral community.
• Weber's routinization of charisma — the prophet's fire cools into priesthood, doctrine, and institution; how a living revelation becomes a church.
• Eliade's sacred space & eternal return — hierophany, the axis mundi, sacred center vs profane periphery, and cyclical ritual time that renews the cosmos.
• Otto's numinous — the raw religious experience as mysterium tremendum et fascinans: dread and fascination before the wholly other; the felt core beneath doctrine.
• Geertz's religion as cultural system — religion as a web of symbols fusing an ethos (how to feel) with a worldview (what's real); the interpretive stance.
• Myth typologies — cosmogony (creation), eschatology (end times), etiology (why things are), theomachy (wars of gods), flood, and dying-and-rising-god myths; the recurring plots.
• Van Gennep's rites of passage — separation → liminality → incorporation; the three-phase structure of every threshold ritual (birth, initiation, marriage, death).
• Turner's liminality & communitas — the betwixt-and-between phase where structure dissolves and a raw fellowship forms; the anthropology of transformation.
• Propp's morphology of the folktale — 31 recurring narrative functions and a fixed cast of roles behind wondertales; structural grammar for myth and legend.
• Aarne–Thompson–Uther tale-type index — the catalogue of migratory folktale plots and motifs; a menu of story-shapes a culture's oral tradition can carry.
• Frazer's magic → religion → science — his evolutionary sequence of how humans try to control the world (contested, but a useful axis for a culture's cast of mind).
• Theodicy — how a faith explains suffering and evil under its cosmology; the doctrine that keeps belief coherent when the world hurts.
• Syncretism, millenarianism & cargo cults — how faiths blend under contact, and how deprivation breeds movements promising an imminent, world-overturning deliverance.

6. magic-and-the-supernatural.md — designing the impossible with teeth (feeds: universal law — the magic switch; present systems — magic's role)

• Sanderson's First Law — the ability to solve conflict with magic is proportional to how well the reader understands its rules; understood magic can resolve, mysterious magic can only threaten.
• Sanderson's Second Law — limitations matter more than powers; a magic is defined and made dramatic by its costs, weaknesses, and what it can't do (this is the project's Limit/teeth check).
• Sanderson's Third Law — expand what you have before adding something new; depth over sprawl.
• Sanderson's Zeroth Law — "err on the side of what's awesome"; the wonder override the other three serve, not smother.
• The hard–soft magic spectrum — hard (explicit rules, can resolve plot) ↔ soft (mysterious, preserves wonder, shouldn't resolve plot); a dial, not a binary — and most systems sit in between.
• Cost / limitation / consequence — the three teeth: what the power takes (cost), what it can't do (limit), and what it leaves behind (consequence); an unbounded magic breaks the world's ability to say no.
• Frazer's sympathetic magic — the Law of Similarity (like produces like — the effigy) and the Law of Contagion (things once in contact stay linked — hair, blood, a name); the real folk-logic most magic systems rest on.
• Mana — the Oceanic concept (Codrington, Marett) of an impersonal supernatural potency that inheres in people and things; the anthropological root of the "magic as substance/energy" model.
• True-name magic — power over a thing through knowledge of its real name; the naming-is-binding tradition (and its sympathetic-magic kinship).
• Vancian / preparatory magic — spells as expendable, memorized-and-forgotten charges; the fire-and-forget model that builds in scarcity as a limit.
• Elemental & correspondence systems — classical elements, humors, planetary and directional correspondences; ready-made internal logics for a magic's taxonomy.
• Source, wielder, cost, limit (the design schema) — the four questions the project's law-guide forces on any "yes, magic exists": where power comes from, who can use it, what it takes, what it can't do.
• The supernatural-beings switch — whether undead, demons, spirits, and magical beasts can exist (a law-level "yes," unlike mundane animals); each needs its own existence-Limit-Epistemic triple.
• The Epistemic status of magic — is the magic known-true (it demonstrably works) or believed (rituals that may do nothing)? A world of real sorcery and a world of sincere superstition are simulated differently.
• Magic's economic & political role (the specials hook) — how a real magic breaks an assumption (production without labor), adds a factor (mana as a resource), or creates an institution (a mages'-guild monopoly); grounding magic in the systems it warps.

7. social-structure-and-kinship.md — who counts as us (feeds: present systems — culture/custom; character positions)

• Descent systems — patrilineal, matrilineal, bilateral, ambilineal; the rule that decides which ancestors you belong to and inherit through.
• Lineage, clan, moiety, phratry — the nested descent groups above the household; the scaffolding of kin-based society.
• The six kinship terminology systems (Morgan) — Eskimo, Hawaiian, Sudanese, Iroquois, Crow, Omaha; how a culture carves up relatives into named categories, and what that reveals about its structure.
• Marriage rules — endogamy/exogamy, monogamy/polygyny/polyandry, cross-cousin marriage, bride-price/dowry, levirate/sororate; who may marry whom, and what changes hands.
• Residence rules — patrilocal, matrilocal, neolocal, avunculocal; where a new couple lives, which quietly shapes power and daily life.
• Alliance vs descent theory (Lévi-Strauss vs Radcliffe-Brown/Fortes) — is kinship built on exchange of spouses between groups or on lines of descent? The great anthropological debate; hold both.
• Social stratification — caste, estate, class, and slavery; ascribed (born-into) vs achieved (earned) status, and how rigid the ladder is.
• Age sets & grades — cohorts that move through life-stages together, structuring society by generation rather than (or alongside) kin.
• Dunbar's number — the ~150 cognitive ceiling on stable personal relationships; a natural grain for band, village, and unit size.
• Honor / dignity / face cultures — three worth-systems (honor = reputation defended, often violently; dignity = inherent inner worth; face = harmony and social standing); the deep grammar of a culture's slights and its violence.
• Guilt vs shame cultures (Benedict) — is transgression policed by internal conscience or by external exposure? Sets how deviance feels and is punished.
• Hofstede's cultural dimensions — individualism/collectivism, power distance, uncertainty avoidance, and the rest; comparative axes to give cultures distinct textures (use with its critics).
• Douglas's grid/group — plotting cultures by how much rule-boundedness (grid) and group-belonging (group) they impose; predicts cosmology and attitude to risk.
• Cultural materialism (Harris) — infrastructure (subsistence, ecology) shapes structure (social organization) shapes superstructure (ideology); a causal stance linking a culture to its material base.
• In-group / out-group & ethnocentrism — the us/them boundary, hospitality vs hostility to outsiders; the multi-culture hinge where contact becomes friction.
• Values-weighting (culture as collective model) — a culture is a shared weighting over the worth-menu (Schwartz's values, Moral Foundations); the collective analog of a character's model (docs/values-and-stakes.md).

8. language-and-naming.md — the sound of a world (feeds: present systems — culture; the naming surface across all layers)

• Phoneme inventory — the set of distinctive sounds a language uses; the palette that makes one tongue feel guttural, another liquid.
• Phonotactics — the rules for how sounds may combine into syllables; the constraint that makes coined words feel like they belong to one language.
• Morphological typology — isolating, agglutinative, fusional, polysynthetic; how a language packs meaning into words, and the texture that gives its names.
• Language families & the comparative method — descent from proto-languages and reconstruction from cognates; the grounding for related peoples having related tongues.
• Regular sound change (Grimm's Law) — languages drift by systematic shifts; the mechanism that makes a family's daughter-languages diverge plausibly.
• Writing systems — logographic, syllabary, abjad, abugida, alphabet; how a script encodes speech, and what its existence implies about literacy and power.
• Toponymy (place-names) — descriptive, commemorative, incident, and possessive naming; place-names as fossilized history written on the map.
• Anthroponymy (personal names) — patronymics, matronymics, clan-names, teknonyms, praise-names; naming conventions as a badge of lineage, status, and culture.
• Onomastic layering — older names surviving in a newer language's landscape (substrate names); how conquest and migration leave linguistic strata.
• Conlang depth levels — from a naming language (just enough phonology to coin consistent names) to a full grammar; matching linguistic effort to what the story levers (the depth rule for language).
• Sound symbolism / phonaesthetics — the felt tone of sounds (Tolkien's "cellar door"); why some names read as harsh, sweet, ancient, or menacing.
• Zipf's law — word frequency follows a steep regularity; a texture-check that invented text feels like real language.
• Linguistic relativity (Sapir–Whorf) — the contested claim that language shapes thought; a lever for making a culture's worldview feel embedded in its speech (use the weak version).
• Tolkien's language-first method — building the mythology to house the languages rather than the reverse; the exemplar of language as a world's root, not its decoration.

9. history-and-societal-change.md — the rise and fall engine (feeds: history — causation; present systems — live tensions)

• Ibn Khaldun's asabiyyah cycle — the dynastic rise-and-fall by solidarity gained on the frontier and lost in the luxurious center; history's oldest structural model of collapse.
• Turchin's structural-demographic theory — instability from the interplay of population, elite numbers, and state finance; a testable model of secular cycles of integration and crisis.
• Elite overproduction — too many aspirants for too few elite positions breeds rivalry, faction, and upheaval; a precise, portable engine of political crisis.
• Secular cycles (Goldstone/Turchin) — century-scale oscillations of population growth, price inflation, and state breakdown in agrarian societies; the rhythm history moves in.
• Tainter's collapse (diminishing returns on complexity) — societies solve problems by adding complexity until its marginal returns go negative, then collapse because simplifying pays; complexity as the trap.
• Diamond's geographic determinism (Guns, Germs, and Steel) — the contested thesis that continental geography and biology, not culture, set which peoples dominated; the strong-determinism pole (hold it against its critics).
• Diamond's Collapse framework — five drivers of societal failure (environmental damage, climate change, hostile neighbors, lost trade partners, and a society's response); a checklist for engineering a fall.
• Toynbee's challenge-and-response — civilizations rise by meeting hard challenges with creative minorities and fall when that creativity fails; a contingency-friendly counter to determinism.
• Spengler's organic cycles (Decline of the West) — civilizations as organisms with a spring-to-winter life-course; the deep-pessimist morphology of history.
• Quigley's Evolution of Civilizations — expansion driven by an "instrument" that ossifies into an "institution," stalling growth until reform or collapse; a mechanism for the plateau.
• Braudel's longue durée (Annales school) — history on three timescales: slow geography, medium social/economic structures, and the fast froth of events; sets which causes actually move a world.
• Great-man vs structural vs contingent causation — the standing debate over whether individuals, deep forces, or accident drive history; the stance a world's history is authored under.
• McNeill's Plagues and Peoples — disease as a prime mover of conquest, collapse, and population; the microbial hinge often left out of history.
• Crosby's Columbian Exchange — biological consequences of contact (crops, animals, and above all pathogens crossing between worlds); the template for what contact does to a planet.
• Path dependence & lock-in — early, sometimes accidental choices constrain everything after (the QWERTY effect); why worlds carry the fossils of old decisions.
• Diffusion vs independent invention — did an idea spread from a source or arise separately? The axis behind how technologies and religions populate a map.
• Demographic transition — the shift from high-birth/high-death to low/low as a society develops; the population dynamics behind modernization and its strains.
• Environmental & climate causation — drought, cooling, and disaster as collapse triggers (the Bronze Age collapse, the 4.2-kiloyear event, the Little Ice Age); the planet writing history.

10. technology-and-material-culture.md — the level of the possible (feeds: planet → history → present systems, cross-cutting)

• The three-age system (Thomsen) — Stone → Bronze → Iron, with Paleolithic/Mesolithic/Neolithic subdivisions; the archaeological ladder of material capability.
• Lenski's sociocultural evolution — societies classed by their subsistence technology (hunter-gatherer → horticultural → agrarian → industrial); tech-level as the master variable behind social form.
• White's energy-capture law — culture advances as energy harnessed per capita rises (C = E × T); a thermodynamic yardstick for a civilization's level.
• Childe's revolutions — the Neolithic (farming) and Urban (cities, writing, states) thresholds; the two jumps that reset what a society can be.
• The tech-tree & prerequisite chains — technologies as a dependency graph (no steel without iron without smelting without fuel); why levels can't be skipped and why one invention unlocks a cascade.
• Lynn White's Medieval Technology and Social Change — how a single device (the stirrup, the heavy plow) can restructure a whole society; technology as a social hinge, not just a tool.
• Rogers's diffusion of innovations — how a new technology spreads (innovators → early adopters → majority → laggards); the S-curve of adoption and resistance.
• Metallurgy stages — cold-working → smelting → bronze alloying → iron → steel; the specific chain that gates tools, weapons, and the wealth of whoever controls the ore.
• Key hinge-inventions — the plow, the wheel, the sail, writing, the printing press, gunpowder, the water/wind mill; individual technologies whose arrival reorders economy and war.
• Appropriate & path-dependent technology — why societies adopt (or refuse) a technology by fit to their ecology, economy, and values, not by "advancement"; guards against a linear tech-ladder.
• Kardashev scale — energy-use tiers for high-tech / SF civilizations (planetary → stellar → galactic); the far-future extension of the energy-capture idea.
• Tech level ↔ everything — how a fixed tech-level bounds economy (surplus, trade range), war (who beats whom), governance (how far a state can reach), and daily life; the coupling that keeps a world consistent.

11. worldbuilding-method-and-grounding.md — how to build with the well (feeds: all layers — the discipline)

• Tolkien's sub-creation & secondary belief — the maker builds a Secondary World with such inner consistency that the mind enters and believes; consistency, not realism, is the goal.
• The iceberg / 1% theory — author far more than shows, but show only the load-bearing tip; the depth beneath the surface is what makes the surface feel real (Hemingway's iceberg, applied to worlds).
• The real-world analog method — grounding every invention in an earthly parallel and the framework that explains it; the core practice this whole skill serves.
• The reskinning pitfall — the failure mode of the analog method: lifting a real culture wholesale as costume, producing flat stereotype; analogize the structure and cause, then diverge.
• Architect vs gardener (Martin) — planning a world top-down vs growing it organically; two working styles, and the project's answer (authored-backward, validated-forward: architect the target, garden the path).
• The MICE quotient (Card) — Milieu / Idea / Character / Event as what a story is about; a lens for how much world a given story actually needs (the premise as curator).
• Authored-backward, validated-forward — the project's own discipline: author toward the premise's demanded present, then run the dependency chain forward to confirm it's earned; the antidote to arbitrary decree.
• The depth rule (hinges, not census) — author only what the probe/story levers; stub the rest "undetermined — fill when levered"; the frame-problem discipline against over-building.
• "Worldbuilding disease" — the caution against building a world at the expense of the story it exists to serve; the well is a means, never the end.
• Consistency & the no-contradiction floor — a world adds without silently rewriting itself; internal consistency is the property that lets characters (and readers) trust the ground beneath them.
• The Limit + Epistemic checks — every invented "yes" carries what it can't do and whether it's known or believed; the two habits that keep a world able to refuse a lever and hold a truth its people can be wrong about.

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Note on the reference files

The deep treatments in references/ are authored in a later pass. This SKILL.md is the curated, comprehensive index — the map of what the well holds and where each framework sits in the world workflow. references/_index.md outlines the eleven reference files above. None of the eleven exist on disk yet: until they're written, a routed reference is absent by default — act on this index's own one-line entry for that framework and proceed; never stall on, or invent, the file. Nothing here is prescriptive: it is a well to draw from, framework-neutral, holding rival schools side by side so the premise — not the toolbox — decides.