Human systems, trade, cities, and price formation through a geographic lens.
Textbook Part
Cities, Networks, and Economic Geography
This part brings the same modelling habits into human geography. It asks how cities organize space, how trade and transport work across distance, and how prices reveal constraint, connectivity, and power.
This Part Builds From Trade Across Distance To Cities, Infrastructure, And Price Systems
The economic geography material is easiest to navigate when it is read as one widening argument. Start with distance and exchange, move into city structure and agglomeration, then treat infrastructure and markets as networked systems that reveal constraints, rents, and power.
Core Trade
Distance, Connectivity, And Arbitrage
Begin with the two core trade chapters that establish movement, frictions, and price convergence.