Environmental Modifiers

_{Design document §1.3}

Circumstance	Affected Focus Areas	Modifier
Coastal start	Seafaring, Trade	+30% Insight
River start	Farming, Trade, Construction	+20% Insight
Mountain/highland start	Mining, Metallurgy, Observation	+25% Insight
Dense forest start	Foraging, Medicine, Woodworking	+25% Insight
Desert/arid start	Observation, Trade, Water Management	+25% Insight
Island start	Seafaring	+50% Insight
Tundra/cold start	Fire, Animal Husbandry, Textiles	+30% Insight
Volcanic region	Metallurgy, Chemistry	+20% Insight
Diverse biome (3+ terrain types nearby)	Farming, Medicine, Foraging	+20% Insight
Isolated (no neighbors within X tiles)	Philosophy and the Arts, Mathematics	+15% Insight
Many neighbors	Warfare, Trade, Diplomacy	+20% Insight
Flood-prone river	Water Management, Construction	+30% Insight
Earthquake-prone	Construction (seismic techniques)	+25% Insight

Necessity Modifiers

When a civilization faces a specific challenge (resource scarcity, military pressure, environmental stress), relevant Focus Areas gain temporary Insight bonuses. A civilization at war gains bonus Insight in Warfare. A civilization suffering famine gains bonus Insight in Farming. Necessity bonuses apply on top of the normal routing — as extra Insight to the relevant Focus regardless of which focus is active — so frontline innovation happens whether or not the state directs it.