A country crosses a fertility cliff
Window: 13 Oct 2036 – 13 Oct 2056
LevelBuilding
What this is
A country's total fertility rate (TFR) crosses a sustained-decline threshold — below replacement for a generation, then below 1.5, then below 1.0 (South Korea pattern). F-CT-9 ADAPTATION-REQUIRED on pension + labor + housing + geopolitical-weight substrates. Not a single event — a baseline shift measured over multi-year windows.
What to watch
- WB + UN WPP TFR projections per countrysteady
- births-per-year absolute number by major-economy countrysteady
- fertility-policy intervention events (incentive + childcare + housing)steady
Cycles that can trigger it
China's 2500-year dynastic rhythmPhase: Rest · 0 predictions
India's two-layer democracy and civilizationPhase: Rest · 0 predictions
The Western democratic-industrial worldPhase: Rest · 0 predictions
Young-population pressure (one generation)Phase: Rest · 0 predictions
The 80-year generational cycle of societiesPhase: Rest · 0 predictions
Predictions that turn on it
No predictions mapped yet
Live predictions attach to this moment as the model identifies dependencies.
Historical precedents
- WB + UN WPP TFR projections per country
- births-per-year absolute number by major-economy country
- fertility-policy intervention events (incentive + childcare + housing)
- immigration-policy events as demographic-replacement attempts
- elder-dependency-ratio projection shifts
Model notes (framework)
The internal taxonomy for pressure moments and their triggering mechanics is documented at the method.