Six resolved tectonic shifts whose outcomes inform how we read active ones. Read this when you want to pattern-match a current shift to a past one.
Each historical shift carries authored content with full data: era charts, beneficiaries-then-known, lessons extracted. The lessons are the analog payoff — they generalize to active shifts that resemble the historical shape.
The Western Roman Empire's fall was a multi-century structural decline driven by the convergence of four forces: demographic stagnation (sub-replacement birth rates among Roman citizens, increased reliance on barbarian recruits), fiscal exh…
Why this here: 180-476 AD. Slow structural decay over centuries. Currency debasement (denarius silver 95% → 2%) was the canary.
The bubonic plague pandemic that killed an estimated 30-50% of Europe's population in four years (1347-1351) triggered the most rapid demographic-economic restructuring in pre-modern history. The shock created sudden labor scarcity, which r…
Why this here: 1347-1351. Sudden mortality shock. Real wages doubled in 50 years; legislation against the labor scarcity premium failed.
The Industrial Revolution transformed labor productivity, settlement patterns, and political structure across Britain and subsequently the Continent and US. Three converging factors: cheap energy (coal), mechanical innovation (steam engine,…
Why this here: 1760-1840. General-purpose technology shifts initially transfer wealth from labor to capital; worker benefits arrive ~50 years later via political reform.
The combination of WW2 mobilization and the post-war baby boom restructured Western economies for two generations. WW2 forced industrial capacity buildouts at peacetime-impossible scale (US output doubled 1940-1944). Post-war demobilization…
Why this here: 1939-1970. War-time industrial capacity, post-war redirected. Demographic wave (4.3M peak births in 1957) drove 60+ years of compounding economic structure.
The Soviet Union's collapse (1989-1991) ended the bipolar geopolitical order and opened a 30-year window of unipolar US dominance with deep economic convergence between Western, formerly-communist, and emerging markets. NATO expansion, EU e…
Why this here: 1989-2001. Hegemonic moment is transitional; the structural beneficiaries generate the reaction that ends the window.
The Internet Boom (1995-2001) was the first general-purpose-technology cycle of the digital era. Mosaic browser (1993) → Netscape IPO (1995) → mass adoption → over-investment → bust (2000-2002) → consolidation → infrastructure-survivor comp…
Why this here: 1995-2010. Cost-curve break → boom → 78% drawdown → recovery. Surviving 70-90% drawdowns is a feature of the cycle, not a defect.