Myths That Built Trickle-Down Economics: Zombie Economics (with Paul Krugman)

Episode Summary

Executive Summary: The episode centers on Paul Krugman’s concept of “zombie ideas”: economic claims disproven by evidence but kept alive because they serve powerful interests and fit neat, misleading models. The hosts and Krugman debate how these ideas spread, why minimum wage fears persist, how climate denial and tax-cut myths endure, and whether economics education itself helps reproduce bad policy.

Main Topics: Zombie economics and recurring false narratives (Priority: 5/5): Krugman explains that bad economic ideas don’t disappear when disproven; they are rebranded and reused in policy debates, especially when they benefit wealthy interests. Tax cuts for the rich and trickle-down economics (Priority: 5/5): A major zombie idea discussed is that tax cuts, especially for the wealthy, will pay for themselves. Krugman says this has never happened despite repeated attempts. Minimum wage and employment myths (Priority: 5/5): The conversation digs into claims that raising the minimum wage kills jobs. Krugman acknowledges the old model, but says modern evidence from natural experiments overwhelmingly contradicts it. Climate denial and political persistence (Priority: 4/5): Krugman identifies climate denial as one of the most dangerous zombies, arguing that it survives despite overwhelming scientific evidence and is amplified by partisan politics. The role of economics education and modeling (Priority: 5/5): A significant portion of the interview debates whether neoclassical models and Econ 101 teaching help create zombie ideas by privileging elegant abstractions over messy reality. Power, ideology, and who benefits (Priority: 4/5): The hosts and Krugman discuss how billionaire-funded institutions and professional incentives keep harmful ideas alive, even when they are empirically wrong. What can be done: persuasion, inoculation, and policy wins (Priority: 4/5): Rather than “killing” zombies outright, Krugman argues for limiting their influence and helping progressive policymakers resist bad advice while pursuing achievable reforms.

Key Arguments: Bad economic ideas persist because they are useful to powerful interests, not because they are true. Tax cuts for the rich paying for themselves has repeatedly failed; there is no evidence it works. Climate denial is a zombie idea with existential stakes because it blocks action on a real crisis. Claims that higher minimum wages destroy jobs are contradicted by decades of evidence from U.S. state and city experiments. The economics profession often prefers beautiful, simple models over accurate ones, which can mislead students and policymakers. Econ 101 simplifications can harden into ideology when students never move beyond the introductory framework. Billionaire-funded institutions and propaganda can keep false economic narratives alive at low cost. Some “zombies” are reinforced by the field’s sociological makeup, including its relative conservatism and demographic homogeneity. The best strategy is not to expect zombies to die, but to weaken their grip and inoculate people against bad-faith arguments. Progressive policy successes such as Obamacare and green-energy investment show that evidence-based reforms can still make a meaningful difference.

Data Points: Time span of columns collected in book: about 20 years - Krugman says many essays in Arguing with Zombies were written over roughly two decades. Tax-cut pay-for-self outcomes: 0 - Krugman says tax cuts paying for themselves have been tried many times and have never happened. Republican senators denying climate change: 73% - Krugman cites a pre-midterms figure showing most Republican senators denied man-made climate change. Seattle minimum wage: $16.39 plus tips - A host notes Seattle’s current minimum wage while discussing the city as a natural experiment. U.S. federal minimum wage history: 22 raises - Nick Hanauer says the federal minimum wage has been raised 22 times in U.S. history. Obamacare coverage gain: 20 million people - Krugman cites the Affordable Care Act as having provided health insurance to roughly 20 million people. Health insurance expansion: halfway to universal coverage - Krugman and the hosts describe the ACA as a partial but significant step toward universal coverage. Austerity and debt obsession period: several years in the middle of the last decade - Krugman notes that government-debt fear dominated Washington for years. Income share benchmark cited by hosts: 23% vs 8% - The hosts compare rich people’s income share to 1980 levels, arguing for a larger demand-side effect if wealth were more broadly distributed. Potential redistributed income: $2.5 trillion - Nick Hanauer estimates the amount that might be spread through the economy if the top income share had stayed at 1980 levels.

Pivotal Quotes: "Dead ideas that somehow keep walking around eating our brains and shaping our public policy." — Greg / Pitchfork intro: Defines Krugman’s “zombie ideas” framing for the episode. "There’s always going to be some of the problem of what I call very serious people who go for something like, well, we must control our debt, which sounds serious because everybody else who sounds serious is saying it." — Paul Krugman: Explains how respectable-sounding but wrong fiscal narratives persist. "Be honest about dishonesty. Don’t pretend that we’re having good faith discussions when we’re not." — Paul Krugman: Krugman’s advice for confronting policy claims that function as propaganda.

Implications: Listeners are urged to treat many “common sense” economic claims as ideological tools, not facts. The episode argues for stronger skepticism, better economic education, and policy grounded in evidence rather than elite interests.