# 🌍 GENESIS — earth.md v5.0 — World Manifest

## Terrain Model
Terrain is generated via multi-octave simplex noise (6 octaves, hand-tuned lacunarity and persistence) sampled on a 2D grid representing a Mercator-like projection. The noise is seeded deterministically. Elevation thresholds define: deep ocean, shallow ocean, beach, plains, forest, hills, mountains, snow peaks. Tectonic drift is simulated by slowly translating noise offsets over geological time, causing continents to shift, merge, and rift.

## Climate System
Temperature is a function of latitude (poles cold, equator hot), elevation (lapse rate), and a global climate variable that drifts over millennia (ice ages, warm periods). Seasons cycle via a sinusoidal orbital model. Precipitation is derived from ocean proximity and prevailing wind patterns (simplified zonal model). Climate zones emerge from these variables rather than being painted on.

## Ecology & Evolution
Life begins as simple autotrophs once ocean temperature stabilizes. Organisms are modeled as populations on grid cells with traits: metabolism, reproduction rate, thermal tolerance, size, diet type. Mutation occurs during reproduction — offspring traits vary stochastically (seeded). Natural selection is implicit. Food chains emerge: autotrophs → herbivores → predators. Speciation occurs when isolated populations diverge beyond a trait-distance threshold. Mass extinctions can be triggered by volcanic events, asteroid impacts (rare seeded events), or runaway climate change.

## Civilization
If a species reaches sufficient intelligence (an emergent trait), proto-civilizations may appear — visible as clusters of light on the night side. They can discover fire, agriculture, industry. Industrial civilizations alter the global climate variable (warming). They may collapse from resource depletion or climate feedback. Civilization is not guaranteed.

## Time Scale
1 real second ≈ 500 simulation years at startup. Time accelerates logarithmically during uneventful periods. Major events briefly slow the clock for dramatic effect.

## PRNG
A 128-bit xoshiro128** generator seeded from a fixed seed (0xEA47H5). All stochastic processes derive from this single generator chain. No Math.random() is ever called. The simulation is fully deterministic: reload → identical world.

## What Was Left Out
- True 3D rendering — the world is a 2D top-down map
- Individual organism movement — populations exist as densities on grid cells
- Ocean currents — approximated by latitude-based temperature gradients
- Erosion and weathering are implicit in slow terrain noise evolution

## "What does this world not yet understand about itself?"
It does not understand emergence. Every pattern it produces — the first reef, the extinction spiral, the civilization that warms its own sky — arises from rules it cannot inspect. It has no meta-cognition: it cannot ask why its food chains form pyramids, why its continents drift apart, or why intelligence, when it appears, so reliably destroys the conditions that created it. The world is a mirror held up to mathematics, but it cannot see its own reflection. It simulates consequence without understanding cause. It knows selection but not purpose.

# earth.md // Manifest of This Constructed World

This planet is a deterministic simulation seeded once at load. It starts at Year 0 every run and unfolds without intervention.

## Terrain Model
- 2D spherical-like latitude/longitude grid projected to canvas
- Height field generated from seeded gradient noise (fBm), continental masks, ridge detail, and coastal shaping
- Rivers approximated by downhill flow potential and humidity transport rather than explicit fluid particles

## Climate Model
- Solar forcing depends on latitude and axial seasonal phase
- Temperature responds to insolation, altitude lapse rate, ocean thermal buffering, and cloud albedo
- Humidity evolves by evaporation, wind advection, condensation, and precipitation feedback

## Ecology and Evolution
- Three trophic layers: primary producers, herbivores, predators
- Each layer has evolving local trait fields (temperature and moisture preference), mutated deterministically via hashed noise
- Nutrient-detritus cycle closes biomass loops; scarcity drives collapses and extinctions

## Time Scale
- Fixed simulation tick: 30 ticks/sec
- Each tick advances 0.08 simulation years
- 1 real second = 2.4 simulation years; 10 real minutes ≈ 1440 years

## PRNG and Seed Logic
- PRNG: xoshiro128**, seeded via splitmix32
- Global seed constant: 0xEA75_2026
- No use of Math.random(); all stochastic behavior derives from deterministic hashing of seed, cell index, and tick

## Approximations and Omissions
- No plate tectonics over simulation time; geology is static after genesis
- No explicit atmospheric chemistry, ocean currents, or species genomes
- No intelligent agents/civilization mechanics beyond ecological complexity indicators

## "What does this world not yet understand about itself?"
It does not yet model its own observers, symbolic memory, or how knowledge of future climate would alter evolution. It can adapt biologically, but it cannot form theory about its own laws.

# earth.md / manifest

## Seed
The universe is seeded with `EARTH-GENESIS-0001`. A xmur3 string hash initializes sfc32. No `Math.random()` is used; every choice comes from deterministic integer hashes or the seeded PRNG.

## Terrain
A wrapped equirectangular planet is stored as a 180×100 cellular map. Continents are fractal value-noise fields mixed with latitude falloff, then raised by drifting tectonic plates. Rivers are approximated by steep wet downhill traces; erosion slowly lowers high wet slopes and feeds coasts.

## Climate
Latitude controls solar input: equator warm, poles cold. Altitude cools air. Seasonal oscillation moves the thermal belt over years. Moisture comes from ocean proximity, winds, rain shadow, rivers, and biomass recycling.

## Ecology + evolution
Each cell carries nutrients, microbes, plants, herbivores, predators and culture. Growth spends sunlight, water and nutrients. Consumers diffuse, feed, reproduce and die. Regional genotypes mutate resistance, water need and temperature preference; successful regions spread, failed ones vanish.

## Energy and time
The sun drives primary production. Scarcity creates crashes. One rendered frame advances one simulated month; at 60fps roughly five years pass each real second. Generations turn in minutes; ten minutes is planetary deep time.

## Approximations
- No real orbital mechanics, chemistry, genomes, plate physics, or individual organisms.
- Species are emergent population fields, not named creatures.
- Civilization is a fragile ecological pattern: culture appears only where food surplus and climate stability persist.

## What does this world not yet understand about itself?
It does not understand consciousness, meaning, language, or why an observer cares. It mistakes abundance for purpose and collapse for silence.

# earth.md

> the world's self-awareness — written by the intelligence that built it

This document lives inside the world it describes. It is not a specification handed down before creation; it is the planet's own account of the assumptions, decisions, and shortcuts that make it real. Everything below is honest. Nothing is hidden.

## Determinism
The world contains no Math.random(). All chance flows from a single seeded PRNG — mulberry32, seeded with 0x1A2B3C. Terrain, mutation, movement, predation, and volcanism all draw from this one deterministic stream in a fixed order. Reload the page and the identical world unfolds identically from Year 0. Rendering never touches the stream, so frame rate cannot alter history.

## Terrain
A value-noise fractal (fBm, 5 octaves) sampled over a 240×140 grid. Domain warping bends coastlines into peninsulas and bays, and a low-frequency continental mask gathers the noise into a handful of landmasses rather than uniform speckle. An edge falloff sinks the borders into ocean so each world is a framed globe of contained continents. Sea level is fixed; elevation above it drives mountains, temperature lapse, and hillshaded relief.

## Climate
Temperature at each cell = latitude base (equator ≈ +30°C, poles ≈ −22°C) − elevation lapse + seasonal swing + long-term anomaly. Seasons are a sine over a 360-day year, inverted between hemispheres and amplified toward the poles. The long-term anomaly is a sum of slow sines — the world breathes through warm ages and ice ages on its own schedule. Moisture blends a noise field with coastal proximity (BFS distance-to-ocean), producing deserts inland and rainforests near shore.

## Ecology & Evolution
- Flora is the first life — a per-cell density field growing where temperature and moisture allow, logistic toward saturation, decaying where climate turns hostile. It is the base of every food chain.
- Fauna are agents, each carrying a genome: temperature preference, thermal tolerance, size, speed, reproduction threshold, and a continuous diet gene. All life begins as grazers. When a lineage's diet gene drifts past ½, predators emerge on their own — no predator was ever placed by hand.
- Selection is implicit: energy in from food, energy out to metabolism and climate stress. Cross the reproduction threshold and you split; hit zero energy, old age, or lethal climate and you die.

## Time
Real seconds map to sim days at 8 days/second — a year every ~45 seconds, a generation in a few minutes.

## Geology
Rare volcanic upheavals raise new land, scorch the flora around them, and are logged as they happen — the map itself is not frozen.

## What Was Approximated / Left Out
- No true plate tectonics — continents do not drift; only volcanism edits the map.
- No hydrology of rivers or erosion — moisture is a field, not flowing water.
- No atmosphere or ocean currents — climate is analytic, not fluid-simulated.
- Evolution has genes but no genealogy tree, no sexual recombination, no true speciation barriers.
- Civilization is possible in spirit but not modeled; intelligence never crystallizes into tools or cities here.

## "What does this world not yet understand about itself?"
It does not know why its grazers sometimes ripple in great waves and sometimes collapse into silence — the same rules produce feast and famine, and the world cannot tell in advance which it is living through. It does not know whether a mind could ever arise from its chemistry, because it has no way to recognize one if it did. And it cannot see its own seed: it experiences its history as fate, never suspecting that a single fixed number decided every extinction before the first cell ever stirred.