Case Study 1 — Maya's Evening, Revisited: What You Know Now That She Didn't

Return to Chapter 1. Maya Diaz, a Millbrook State sophomore, is deciding between covering a shift at the Riverside Bistro ($80 in tips) and studying for tomorrow's exam. In Chapter 1, we analyzed this with four tools: scarcity, opportunity cost, marginal thinking, incentives.

Now, forty chapters later, you can do much more.

Labor market analysis (Chapter 21): Maya earns about $13/hour at the Bistro. Millbrook's labor market has moderate monopsony features — there are only a handful of restaurants and retail employers near campus. Maya's wage reflects her limited alternatives, not her full marginal revenue product.

Behavioral lens (Chapter 10): Maya faces present bias (the $80 is immediate; the exam benefit is delayed). She faces loss aversion (saying no to Sarah feels like losing a friendship). She faces the sunk-cost trap if she's already studied a lot ("I've already put in so much time, I should keep going" — even if the marginal benefit of another hour is low).

Inequality lens (Chapter 13): Maya is working a shift to cover rent because Millbrook State's tuition has risen faster than inflation (Baumol's cost disease, Chapter 36), her adjunct-professor mother earns $38,000 (monopsony and institutional erosion, [Chapter 21](../../part-04-firms-and-market-structure/chapter-21-labor-markets/index.md)), and housing near campus costs $1,400/month (supply constraints, Chapter 36). Maya's decision is not just personal — it's shaped by structural economic forces.

The honest answer: Maya should probably decline the shift (the marginal benefit of studying exceeds the marginal benefit of $80, given the exam is tomorrow). But the fact that she has to make this choice at all — that a college student at a public university must choose between exam preparation and making rent — is a failure of the systems around her, not a failure of her character.

That is what 40 chapters of economic analysis gives you: the ability to see both the individual decision and the structural forces that shape it. That is the superpower.