Part VIII — Contemporary Economics
The topics most introductory textbooks barely cover.
The first seven parts of this book cover the same ground every reasonable principles course covers: scarcity, supply and demand, market failure, firm behavior, GDP, money, and macroeconomic policy. Part VIII is different. It is the part where this book — born in 2025 — takes on the topics that most existing textbooks treat as afterthoughts, sidebars, or "advanced topics for interested readers." The five chapters in Part VIII are the topics that have most reshaped economic life in the last two decades, and the topics most likely to shape the next two.
By the end of Part VIII, you should be able to analyze the economic dimensions of global poverty, AI and labor markets, the housing affordability crisis, cryptocurrency, and the relationship between economic growth and human flourishing. You should be able to recognize when an existing economic framework applies cleanly and when the contemporary topic requires you to extend the framework or recognize its limits.
Chapter 34 — Development Economics is the new chapter this textbook adds at the start of Part VIII. Why a textbook for global readers cannot leave development to a footnote in the growth chapter. The chapter walks through poverty measurement (the World Bank's $2.15/day extreme poverty line, the recent slowdown in poverty reduction), three theories of underdevelopment (geography, institutions, colonial history), the Sachs-Easterly debate over foreign aid, and the RCT revolution that won Banerjee, Duflo, and Kremer the 2019 Nobel for taking development questions to randomized field experiments. Case studies: Bangladesh, Rwanda, Haiti, India.
Chapter 35 — The Economics of Technology introduces the features that make digital markets different: network effects, two-sided platforms, near-zero marginal cost, and winner-take-all dynamics. The chapter walks through the gig economy as a regulatory puzzle, evaluates three claims about AI and labor markets honestly (mass unemployment, augmentation, polarization), and uses the Millbrook Innovation Hub — the city's new public-private incubator — as the running example. What does the success of an incubator depend on? Talent supply, capital, regulation, and luck.
Chapter 36 — Student Debt, Housing, and the American Dream Under Pressure is the chapter that asks why being young in 2025 feels harder than being young in 1975. College costs have risen far faster than inflation for forty years; the chapter walks through four explanations (Baumol's cost disease, the Bennett hypothesis, administrative bloat, state funding cuts) and is honest about which explanations the evidence best supports. Then housing: the supply-restriction story (zoning, NIMBYism, the missing middle) and the demand-side story (low interest rates pushing prices up). Both matter; one matters more in the long run. The Millbrook student housing crunch is the running example.
Chapter 37 — Cryptocurrency and the Future of Money treats cryptocurrency from an economics perspective rather than a technology perspective. Bitcoin as a monetary experiment — does it pass the three-functions-of-money test? Stablecoins. Central bank digital currencies. The history of private money (the US "free banking era," Hayek's Denationalization of Money). The honest economic assessment: crypto has demonstrated some real innovations and some real failures, and is neither a revolution nor a Ponzi scheme.
Chapter 38 — Economics and the Good Life is the book's most reflective chapter. The Easterlin paradox and the more recent research that has weakened it. Hedonic adaptation. Sen's capability approach. The chapter takes a clear position: economic thinking is a powerful tool for analyzing tradeoffs, incentives, and unintended consequences — and using it as the only lens for evaluating policy or personal life is a mistake. This isn't a critique of economics; it's a defense of economics done with humility.
When you finish Part VIII, you have nearly finished the book. Part IX is two synthesis chapters that ask: where does the field as a whole agree, where does it disagree, and what should you do with what you have learned?