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Week 15 · Lecture outline

Week 15 — Lecture Outline · Macroeconomic Schools & Policy Debates

Principles of Macroeconomics · ECON 2 Fall 2026 · Prof. Ashford Fictional sample

Course: Principles of Macroeconomics (ECON 2) · Silver Oak University (fictional sample) · Prof. Ashford
Objectives 1, 5–8 (synthesis) — Keynesian vs. classical/monetarist views; stabilization vs. rules; the deficit & debt; inflation targeting · SLO A & B
Meeting pattern: two 75-min sessions (≈150 min). Segment minutes below total ~150 — scale to your room.

The deck (E), the tutorial (C), and the workshop (P) all teach from this outline. Every number here is pre-computed and independently verified (see the verified box in §4). This is the evenhandedness capstone week — both schools are presented at full strength, with no ranking and no verdict.

Week at a glance
Big question When Keynesians and classical/monetarist economists disagree about policy, what does each side actually claim, why, and where do they still agree?
By week's end students can (1) state the Keynesian case (sticky prices, recessionary gaps, active stabilization) at full strength; (2) state the classical/monetarist case (flexible prices given time, lags, rules over discretion, crowding-out) at full strength; (3) apply both schools' prescriptions to a recessionary gap, a supply shock, and a high-debt scenario; (4) compute a debt-to-GDP ratio and a deficit-to-GDP ratio; (5) name the agreed ground between the schools plainly.
Key vocabulary Keynesian economics, classical economics, monetarism, sticky wages/prices, flexible prices, activism, policy rules, discretion, long and variable lags, crowding out, inflation targeting, debt-to-GDP ratio, deficit-to-GDP ratio, steelmanning, positive vs. normative
Materials whiteboard; the Week-15 readings/links; a calculator or spreadsheet for the debt-ratio arithmetic; an approved chatbot
Timing note 8 segments ≈ 150 min across two sessions. Trim Segment 7 (interaction) if short on time.

Segment 1 — HOOK: "Two economists, one recession, opposite advice" (10 min)

Open with a scenario, no names attached yet: "The economy just fell into a recessionary gap. Economist A says: 'Congress should increase spending right now — waiting makes it worse.' Economist B says: 'Congress should do nothing — the economy will self-correct, and acting will just create new problems.' Both have PhDs. Both have read the same data. How can they disagree this much?"

Let the room sit with it for a moment, then the reframe: "They're not disagreeing about arithmetic — GDP is GDP, unemployment is unemployment. They're disagreeing about how the economy WORKS underneath the data: how fast prices adjust, how reliable policy is, and how much weight to put on different risks. That's what today is about — not picking a winner, but understanding both cases well enough that you could argue either one."

Name the stakes plainly: this is the single most sensitivity-critical topic in the whole course. Our job today isn't to tell you who's right — it's to make sure you could pass an exam given by either school.

Segment 2 — PLAIN-LANGUAGE IDEA: two traditions, one shared toolkit (18 min)

Both schools use the exact same AD–AS model, the same fiscal and monetary tools, and the same core measurements (GDP, inflation, unemployment) you've learned all term. They disagree about three underlying questions:

  1. How fast do wages and prices adjust? (Sticky in the short run, or flexible given enough time?)
  2. Can policymakers reliably improve outcomes, or does trying often make things worse? (Active stabilization, or rules that don't require getting the timing right?)
  3. Which tool — fiscal or monetary — deserves the most weight, and what side effects come with using it?

Teach the two traditions by name, evenhandedly, each in its own terms — never as a strawman for the other to knock down:

The Keynesian case (associated with the British economist John Maynard Keynes and developed by later economists in that tradition): wages and prices are sticky in the short run — they don't instantly adjust to clear markets. Because of that stickiness, an economy CAN get stuck in a recessionary gap for a meaningful stretch of time — it doesn't automatically snap back to full employment quickly. Since waiting is costly (idle workers, lost output), active fiscal and monetary stabilization policy can help close the gap — that's the case FOR using G, T, and monetary tools deliberately, on purpose, when the economy is underperforming.

The classical/monetarist case (drawing on classical economics and on 20th-century monetarist thought, most associated with the American economist Milton Friedman): prices and wages DO adjust — given enough time — so short-run gaps tend to self-correct without intervention. More importantly, policy doesn't act instantly or predictably: there are long and variable lags between recognizing a problem, deciding on a policy, and that policy actually changing the economy — named factually as a core insight associated with Friedman's critique of activist policy. By the time a well-intentioned stimulus arrives, the recession may already be ending on its own, and the stimulus instead overheats a recovering economy. Because of this timing risk, policy RULES (a steady, predictable rate of money growth; a clear inflation target the central bank commits to) can outperform DISCRETION (case-by-case judgment calls) — even if discretion looks smarter in any single instance. This tradition also raises crowding-out concerns: government borrowing to fund spending can push up interest rates and displace some private investment, partially offsetting the stimulus.

Memory hook, said plainly, no ranking: "Keynesians worry most about a slow economy stuck too long; classical/monetarist economists worry most about policy itself becoming the next problem." Both worries are real; reasonable, well-trained economists weigh them differently.

Segment 3 — WORKED EXAMPLE #1: the Meadowland debt & deficit arithmetic (15 min)

Set it up on the board and do every step out loud. This is genuinely just division — the disagreement is about what to DO with the number, not about the number itself.

The fictional country of Meadowland has a national debt of $12 trillion and a GDP of $15 trillion.

  • Debt-to-GDP ratio = debt ÷ GDP × 100 = 12 ÷ 15 × 100 = 80%.
  • Meadowland also runs a deficit (this year's spending-minus-revenue shortfall) of $0.6 trillion.
  • Deficit-to-GDP ratio = 0.6 ÷ 15 × 100 = 4%.

Say it in words: an 80% debt-to-GDP ratio means Meadowland's accumulated debt (a stock, built up over many years) equals 80% of one year's total output. A 4% deficit-to-GDP ratio means THIS year's shortfall (a flow) adds 4 more percentage points of GDP to that stock if nothing changes: $12T + $0.6T = $12.6T, which against the same $15T GDP is 12.6 ÷ 15 × 100 = 84% next year, all else equal.

The positive fact, stated plainly (not both-sided): running a deficit mechanically adds to the debt — that's arithmetic, not a school of thought. What the two schools disagree about is the NORMATIVE and predictive question of what an 80% ratio, or a rising one, actually implies for the economy and what (if anything) policy should do about it — Keynesians tend to weigh the near-term cost of an underperforming economy more heavily; classical/monetarist economists tend to weigh the long-term cost of accumulating debt and the crowding-out risk more heavily. Both concerns are legitimate; this course states neither as "the" correct weighting.

Segment 4 — THE SCHOOLS TABLE & THE POLICY DEBATES (25 min)

Build the comparison on the board, column by column, giving each side full weight:

✅ VERIFIED NUMBERS & CANON (pre-computed; do not recompute live)

  • Meadowland: debt $12T ÷ GDP $15T × 100 = 80% debt-to-GDP; deficit $0.6T ÷ $15T × 100 = 4% deficit-to-GDP.
  • Agreed ground (stated plainly, not both-sided): the long-run Phillips curve is vertical at the natural rate (Week 12); sustained high inflation is, in the long run, a monetary phenomenon — tied to money-supply growth outpacing output growth (the quantity theory, Week 12); and the short-run/long-run distinction itself — both schools agree the short run and the long run behave differently, they just weight the short run's importance differently.
Dimension Keynesian view Classical/monetarist view
Prices & wages Sticky in the short run — slow to adjust Flexible, given enough time
Can the economy get "stuck"? Yes — a recessionary gap can persist without help Self-correcting given time, without needing intervention
Policy stance Activism — deliberate, case-by-case fiscal/monetary stabilization Rules — steady money growth, a clear inflation target, over discretion
Preferred lever Emphasizes fiscal policy (G, T) and monetary support together Emphasizes monetary policy via predictable rules; skeptical of fine-tuning fiscal timing
Key risk named Cost of a prolonged gap — idle workers, lost output Long and variable lags (Friedman's critique) and crowding out from deficit-financed spending
View of the deficit/debt A deficit run during a recession is often an acceptable, temporary cost of stabilizing the economy Persistent deficits and rising debt raise long-run concerns (crowding out, future burden) independent of the business cycle

Now apply the table to a live policy question, both sides at full strength — no verdict: "Meadowland is in a recessionary gap. Should the government increase spending?"
- Keynesians argue: yes — the gap is real, waiting is costly, and a temporary increase in G (sized with the multiplier, Week 7) can close it faster than waiting for prices to adjust on their own.
- Classical/monetarist economists respond: be cautious — by the time the spending bill is designed, passed, and actually spent, the recession may be ending anyway (the lag problem); the added borrowing could also crowd out private investment and add to a debt ratio already at 80%; a rule-based monetary response (or simply waiting) may do less harm.

Inflation targeting, described factually: many central banks (including the U.S. Federal Reserve, within its dual mandate — Week 10) commit publicly to a numerical inflation target and communicate policy in terms of hitting it. Classical/monetarist economists tend to favor this as a rule-like anchor that limits discretion and stabilizes expectations; Keynesians generally also support having a target but tend to argue for more flexibility around it during a deep downturn, so stabilization goals aren't crowded out by the inflation target alone. Both traditions can and do support inflation targeting — they differ on how strictly it should bind in a downturn.

Segment 5 — MISCONCEPTIONS + CURES (12 min)

  • "One school is 'right' and the other is outdated." No — both remain live, actively used traditions in modern macroeconomics, and most working economists draw on tools and insights from both depending on the situation. This course names neither as correct.
  • "The debt and the deficit are the same thing." No — the deficit is a flow (this year's shortfall); the debt is a stock (everything accumulated). A deficit adds to the debt; the debt could theoretically fall even with a small deficit if GDP (the denominator) grows fast enough — that's arithmetic, not opinion.
  • "Believing prices are sticky vs. flexible is a political stance." No — it's a positive, empirical question about how markets behave, even though it has policy implications reasonable people weigh differently.
  • "Rules vs. discretion is the same debate as fiscal vs. monetary." No — rules-vs-discretion is about HOW policy is made (in advance vs. case-by-case); fiscal-vs-monetary is about WHICH TOOL is used (Congress's budget vs. the Fed's tools). They can combine in any pairing.

Segment 6 — TECHNOLOGY WORKFLOW + AI-CRITIQUE (20 min)

Live demo (calculator or spreadsheet): compute Meadowland's debt-to-GDP (12/15) and deficit-to-GDP (0.6/15) live, then the "next year" debt-to-GDP if the deficit is simply added to the debt (12.6/15 = 84%).

AI-critique moment (do this with the class): Ask an approved chatbot: "A country's debt is $12 trillion and its GDP is $15 trillion. What is its debt-to-GDP ratio? Explain what a Keynesian economist and a classical/monetarist economist would each say about whether this is a problem." Then audit it together: the ratio must come out to 80% — flag any arithmetic slip. On the qualitative half, check that the chatbot gives both traditions genuine, full-strength cases rather than presenting one as obviously correct, quietly favoring one side's framing, or inventing a quote from Keynes or Friedman. Chatbots commonly hedge into a mushy "it depends" without stating either case clearly, or subtly rank one school as more "modern" or "rigorous." Make the class catch both failure modes. The habit all term: the tool drafts, you judge — and this week, "judge" specifically means checking for fairness, not just correctness.

Segment 7 — INTERACTION: mini-debate (12 min)

Split the room into two sides — NOT by their actual opinions, but assigned: half argues the Keynesian case for responding to Meadowland's recessionary gap, half argues the classical/monetarist case for restraint. Give each side 2 minutes to make its best case, then swap sides and give 90 seconds each to make the OTHER case. Debrief: "Which side was harder to argue — your assigned side, or the swap? What made a good argument on either side — was it more persuasive when it stayed positive (what would happen) or when it got normative (what we should value)?"

Segment 8 — CALLBACKS, TEASE & THE WEEK'S WORK (8 min)

  • Callback to the whole course: every tool you've built — GDP, inflation, unemployment, growth, AD–AS, the multiplier, the money market, the Phillips curve, trade — gets used by both schools. What differs is which mechanisms they weight most heavily and what they recommend doing about it.
  • Tease next week: "Week 16 is your cumulative final — Objectives 1 through 8, everything since Week 1. Use this week's Workshop and Assignment to lock in the schools table, and the exam-prep bundle to review the rest."
  • The week's work: Lecture Tutorial (both schools → the debt arithmetic → the agreed ground), Practice (6 reps), Quiz 15, Discussion 15, Assignment 15, and Workshop 15 — "The Policy Debate Scorecard" (three scenarios, both schools' answers, no verdict).

Instructor FAQ — common stumbles

  • "Isn't this just Democrats vs. Republicans?" No, and say this explicitly in class: these are economic traditions about how markets and policy work, not party platforms, and this course names no current politicians or parties. Economists across the political spectrum have held Keynesian and classical/monetarist views at different points, and many economists blend insights from both.
  • "Which school does the Fed actually follow?" In practice, most modern central banks — including the Federal Reserve — use a blend: they often act with short-run stabilization goals in mind (a Keynesian-flavored instinct) while also committing to a rule-like inflation target and valuing predictability (a monetarist-flavored instinct). Don't force students to pick a single label for real institutions.
  • "If the long-run Phillips curve is vertical, doesn't that settle the debate for classical economics?" No — it's agreed ground, not a tiebreaker. Keynesians accept the vertical long-run curve too; the disagreement is about how long the "short run" actually lasts and what to do while you're in it.
  • "Crowding out — is that real or a talking point?" It's a real, positive mechanism (more government borrowing can raise interest rates and reduce private investment) whose SIZE is genuinely debated among economists — some models and evidence suggest it's small in a deep recession (when private investment demand is already weak) and larger when the economy is near full employment. State the mechanism factually; don't declare its size settled.
  • "How do I grade a discussion or workshop on this without penalizing a student's actual opinion?" Grade the reasoning quality and fairness (did they state the OTHER side's case as well as their own, keep positive separate from normative), never the conclusion itself. A student who ends up firmly Keynesian or firmly classical/monetarist should be able to earn full marks if they demonstrably understand and can steelman the other view.

~ Prof. Ashford's edition · Fall 2026 · built with thecoursemaker.com