Uniflection

Different subjects ask for different shapes. A textbook is right when theory has to build on itself. A timeline, when the ideas only make sense in sequence. A map, when the geography is the story. The artifact you end up using is what proves you understood the material.

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Format fits the subject
The form follows the subject. Pushing every subject through a single default format is how textbooks get bad.
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Rigorous foundations
Past explainer level. Graphs you can manipulate, relationships you can trace, formal structure laid out rather than gestured at.
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Positions, not both sides
The strongest opposing views get steelmanned. Then the writeup takes a side. Nuance isn’t neutrality.
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Arrive with a question
Start from what pulled you in: a debate, a place, a period you want to understand. The chapter list comes later, if at all.
Subjects

Economics

From Scarcity to DSGE

Twenty chapters from supply and demand through DSGE models, with 155+ interactive graphs. Ten Big Question walkthroughs start with real-world provocations, work through the debates, and end on a position. Hot Takes dissect viral claims and political arguments throughout.

20 chapters 155+ interactive graphs 4 languages
Explore by time

History of Economic Thought

An Interactive Knowledge Graph

Trace the intellectual lineage of economics from Adam Smith through Keynes, Friedman, and Kahneman. 63 thinkers, schools, key works, and crises connected by influence, opposition, and paradigm shifts. Click any node to explore.

63 nodes 6 relationship types 4 languages
Explore by space

GDP Per Capita Through History

An Interactive Choropleth

Watch the Great Divergence unfold across 200 years of GDP per capita on an interactive world map. Play through decades from 1820 to 2020, hover any country for context, and see which regions industrialized first.

166 countries 1820–2020 4 languages

World Language Map

An Interactive Language Map

Every mapped language on Earth. Switch between world, Europe, and East Asia views, zoom from families down to individual languages, and see where each family lives.

280+ families 4,700+ languages 4 languages

Language Families of Europe

An Interactive Language Map

Explore how Europe's languages map onto its geography. Six families, 50 languages, with the histories and family relationships that shaped where each one is now.

6 families 50 languages 4 languages

Language Families of East Asia

An Interactive Language Map

Sino-Tibetan, Austroasiatic, Tai-Kadai, Japonic, Koreanic and more — explore how the languages of East Asia spread across the region.

17 families 580+ languages 4 languages

Silk Road Trade Routes

An Interactive Historical Map

Trace the ancient trade networks connecting China to Rome. 15 routes and 27 cities from Chang'an to Constantinople, with the goods, empires, and economics that moved between them.

15 routes 27 cities 4 languages

Atlantic Triangle Trade

The Economics of the Slave Trade

Four centuries of voyages between Europe, Africa, and the Americas. 24 ports, 116 voyage aggregates, 1500–1870, with the economic context and the legacies the system left behind.

24 ports 1500–1870

Two Trade Systems, Compared

Silk Road & Atlantic on One Map

Scrub a single timeline from 200 BCE to 1870 and watch the overland silk routes fade as the Atlantic system rises. Built to show the 15th-century hinge and what replaced it.