The book's unfinished work
Women's Compounding Score
Who was allowed to compound knowledge -- and who was locked out?
Every civilization in the book was measured on whether it compounded. None was measured on who within it was allowed to compound. This is the first of those scores, run backward from today, the way the Epilogue runs it.
What the book’s Figure 18 plots
Half the species held outside the protected niche by statute, custom and inheritance code for nearly the whole of the scribe’s career. The line is essentially flat for fifty centuries, then goes vertical in a hundred and fifty years (Ch 17).
10th century
Ende, paintress and helper of God, signs the Girona Beatus in the kingdom of Leon.
12th century
Guda, a sinful woman, wrote and painted this book: the earliest signed self-portrait by a woman in Western art.
11th or 12th century
Trota practices and teaches medicine in Salerno; because it was written, her work traveled.
1872
The inflection: mass female schooling arrives in Meiji Japan.
1960 to 2010
Opening the gate partway to women and minorities accounts for twenty to forty percent of American economic growth.
118 years
At the current pace, the gender gap in American invention closes in one hundred and eighteen years.
Ende, Guda and Trota produced without the channel that converts production into compounding. The seed scores below are the site’s working instrument, not the book’s figure.
Run the clock backward
2020s Workforce parity
Women hold 47 percent of the global workforce and earn roughly 60 percent of US bachelor's degrees. The compounding runs through both channels.
China 2.5Japan 2Korea 2.5England / United Kingdom 3France 3United States 3Soviet Union / Russia 2Nordic countries 31980s Education crossover
Women surpass men in US bachelor's degrees in 1982. South Korean female literacy 64 percent (1970) to 97 percent (1990).
China 2Japan 2Korea 2England / United Kingdom 2.5France 2.5United States 2.5Soviet Union / Russia 2.5Nordic countries 31940s-1960s Post-war expansion
Sulfonamides and antibiotics break the mortality tax. Wartime workforce entry, then the seed planted in GI Bill households.
China 2Japan 2Korea 1.5England / United Kingdom 2France 2United States 2Soviet Union / Russia 2.5Nordic countries 2.51900s-1930s Suffrage
Political voice without economic access. New Zealand 1893, Finland 1906, the United States 1920. The mortality tax holds until 1937.
China 1Japan 1Korea 1England / United Kingdom 1.5France 1United States 1.5Soviet Union / Russia 2Nordic countries 21800s Institutional exclusion
Exclusion formalised by statute. The Napoleonic Code of 1804; universities closed to women across Europe.
China 0.5Japan 1.5Korea 0.5England / United Kingdom 1France 0.5United States 1Soviet Union / Russia 1Nordic countries 1Pre-1800 Crop-determined access
The plow, the inheritance code and a six percent lifetime mortality tax lock wheat cultures; collective rice labour keeps a narrow door open.
China 1Japan 2Korea 0.5England / United Kingdom 0.5France 1United States 0.5Soviet Union / Russia 0.5Nordic countries 1
Scores across time
Highlighted by default: China and Japan, the cases that fall before they rise. A score that only ever went up would be a story, not an instrument. Click any name to highlight it; hover the chart for the note behind each score.
* non-monotonic. Up to two highlighted at once; the rest recede to gray.
| China* | 1 | 0.5 | 1 | 2 | 2 | 2.5 |
| England / United Kingdom | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 |
| France* | 1 | 0.5 | 1 | 2 | 2.5 | 3 |
| Japan* | 2 | 1.5 | 1 | 2 | 2 | 2 |
| Korea* | 0.5 | 0.5 | 1 | 1.5 | 2 | 2.5 |
| Nordic countries | 1 | 1 | 2 | 2.5 | 3 | 3 |
| Soviet Union / Russia* | 0.5 | 1 | 2 | 2.5 | 2.5 | 2 |
| United States | 0.5 | 1 | 1.5 | 2 | 2.5 | 3 |
China non-monotonic
Crop: rice and wheat (north wheat, south rice)
Falls before it rises. Foot-binding (roughly 960-1911) tightened during the exam system's strongest centuries, then the 1950s Marriage Law and mass literacy campaigns opened the channel in a single generation. The score dips in the 1800s below its pre-1800 level.
Japan non-monotonic
Crop: rice
The clearest non-monotonic case. Heian women wrote the world's first novel; terakoya schools taught girls for two centuries; Meiji opened mass female schooling in 1872, the inflection point the book marks (Figure 18), even as the 1898 Civil Code narrowed women's legal standing. Post-war literacy was already near universal, but the credentialing class stayed male long after.
Korea non-monotonic
Crop: rice
Early Joseon women could inherit and hold property. As the gwageo dragon matured, Neo-Confucian ideology stripped those rights (Deuchler 1992). The 1961 jolt reversed it: female literacy rose from 64 percent to 97 percent in twenty years.
France non-monotonic
Crop: wheat
France's cave overflowed in 1789: too many educated men for too few positions. The Napoleonic Code of 1804 then locked women out for another century and a half.
Soviet Union / Russia non-monotonic
Crop: wheat
The only system that deliberately lifted the mortality tax and opened the gate at once. The fastest female compounding in any scribal class, inside a dragon with no exit. When the dragon was slain in 1991 the gains scattered.
The mortality tax
Why the score barely moves before 1937. Maternal deaths per 100,000 live births in England and the UK held near one percent per delivery from the first parish registers until sulfonamides entered clinical practice. Then the cliff.
China (Pre-1487) (-1400 to 1487 (rising) / 1487-1905 (stagnation))
Gate shut for women across entire period; exam system excluded women by design
The keju ran 1300+ years and selected exclusively for men. Women were formally excluded from the examination system. The same institutional channel that left a measurable genetic fingerprint (Ch 4) compounded ONLY through men because the gate was built with a male-only lock. Chinese foot-binding (roughly 960-1911) physically restricted women during the same centuries the dragon was strongest. The dragon and the mortality tax reinforced each other: the institution excluded women, and the biological risk of reproduction discouraged families from fighting for inclusion.
Elman 2000; Bossen & Gates 2017
Roman Republic/Empire (-200 to 200 (rising))
Julia's death (54 BC) falls in the RISING period -- the biological tax hit during peak compounding
Julia died in August 54 BC during Rome's rising period (200 BC - 200 CE, Rising Score 3). The Republic was actively compounding -- law, engineering, census, 10-15% literacy. The one-percent-per-delivery risk killed the human bond holding the political architecture together. The biological tax did not wait for stagnation. It struck at the peak.
Plutarch Life of Pompey; Loudon 2000
French Ancien Regime (1100-1604 (rising) / 1604-1789 (stagnation))
Salic Law + maternal mortality = double lock on women's compounding
France's Salic Law (formalized 14th c.) excluded women from inheriting landed property AND from the throne. Combined with the ~1% per delivery mortality rate that held steady from 1550-1800 (CAMPOP Cambridge), French women faced two gates: a legal one written by the scribe and a biological one written by nature. The dragon's credentialing monopoly ran through male-only institutions (universities barred women until 1880s). The Revolution (1789) slew the dragon but did NOT lift the mortality tax -- that required sulfonamides in 1937, 148 years later.
Alesina/Giuliano/Nunn 2013; Loudon 2000
Modern US University (1876-1970 (rising) / 1970-2026 (stagnation))
1982 women surpass men in enrollment -- the mortality tax lifts AND the dragon weakens simultaneously
The US university system's rising period (1876-1970) was overwhelmingly male. Women earned just 19% of bachelor's degrees in 1900. The mortality tax was still high (US maternal mortality ~600/100k in 1915). When BOTH constraints lifted -- sulfonamides/antibiotics after 1937 AND women's legal access to universities -- women surpassed men in enrollment by 1982 and have widened the gap every year since. The stagnation period (1970-present, Score 2) coincides with credential inflation -- which now affects women disproportionately because they are the majority of the credentialing class. The dragon's modern costume (UPL for law, tenure for academia) may be the first dragon in history that gates MORE women than men.
NCES Digest; WHO/UNICEF; Loudon 2000
England/UK -- Mortality Timeline (1550-1937 plateau / 1937-2022 cliff)
England straddles Late Medieval Europe (counter-example: the claw never closed) and the modern era
England/UK never formed a full dragon (Late Medieval Europe scores Stagnation 1, WEAK evidence). No unified credential monopoly -- competing institutions (Oxford vs Cambridge vs Inns of Court vs Church vs Crown). This fragmentation is PRECISELY why England was where the mortality-tax data exists at all: parish registers from 1538 (Thomas Cromwell's mandate) give us 470 years of continuous data. A monopoly system would not have produced competing recordkeeping institutions. The absence of the dragon enabled the innovation (sulfonamides, antibiotics, sterile surgery) that eventually lifted the biological tax. Fragmentation -> innovation -> the cliff begins 1937.
Loudon 2000; Wrigley & Schofield 1981
Scribal Saturation -- All Professions (Crossing dates 1970s-2010s)
Women's entry into professions COINCIDES with saturation crossing dates
Finance crossed in the early 1980s (women 9.1% of CFAs in 1990, 18% by 2023). Law crossed ~1990s (women 3% of lawyers in 1970, 38% by 2023). In the academy, women were 23% of full professors in 1993 and 34% by 2023. In EVERY case, the profession had already passed its saturation crossing date before women reached significant representation. Women are entering scribal classes that are already in the tail-eating phase -- producing more ink per novel insight. The question the book asks: is this the dragon's last costume? Women finally enter the gate just as the gate becomes the problem?
BLS; ABA; NCES; CFA Institute
Joseon Korea (1392-1600 (rising) / 1600-1897 (stagnation))
Neo-Confucian gender restrictions tightened AS the dragon formed
Early Joseon women had property rights and could inherit. As the dragon matured (credentialing monopoly via the gwageo exam, self-serving yangban class), Neo-Confucian gender ideology was IMPOSED -- women's property rights were stripped, widows forbidden from remarrying, strict inside/outside separation enforced. The dragon and gender exclusion grew together. The exam selected for men; the ideology that justified the exam excluded women. Same pattern as China but compressed into a shorter timeline with clearer before/after evidence.
Deuchler 1992 'The Confucian Transformation of Korea'; Wagner 1974
Soviet Union (1917-1960 (rising) / 1960-1991 (stagnation))
Only system that deliberately lifted the mortality tax AND opened the gate simultaneously
The USSR drove maternal mortality from ~1200/100k (1920s Russia) to ~55/100k by 1970. Simultaneously mandated women's education and workforce participation. Women earned 58% of Soviet engineering degrees by 1985. Result: the fastest female compounding in any scribal class in history. But the dragon (state academy monopoly, no exit) ate the gains -- women were compounding inside a stagnating system. When the dragon was slain (1991 collapse), the compounding scattered rather than compounded further.
WHO European Health Database; Soviet education statistics; Lapidus 1978
Coming soon
The women’s score is the first of many. Three more instruments are named in the Epilogue and not yet scored.
Coming soon
Slavery Suppression Score
The stolen river. Scores how much of a civilization's surplus was pumped out by enslaved labour, and what happened to the carriers who were removed. Seeds already in stability.json (slaveryScore, 0-10).
Coming soon
Diaspora Resilience Score
The seed bank. Scores whether a transmission system survives dispersal: the Jewish literacy mandate after 70 CE, the Greek scholars after 1453, the Huguenots after 1685.
Coming soon
Carrier Pool Expansion Score
Who was allowed in, and when. Generalises the women's score to every gate: caste, class, religion, language, citizenship. The Epilogue's next instrument.