from Asad Zaman and WEA Pedagogy Blog
This post summarizes the first five chapters (through Chapter 5A) of Alasdair MacIntyre’s Whose Justice? Which Rationality? It is written for economists—especially heterodox economists—because MacIntyre exposes something deeper than “mainstream mistakes.” He shows why modernity has lost the ability to even hear what Plato and Aristotle were saying about justice: justice is not an individual preference or a procedural device, but a social achievement—an expression of shared norms, practices, and moral education.
Economists already know that methodological individualism shapes micro theory. Many also know (and teach) that norms matter—there is an entire literature on culture, identity, institutions, and “social preferences.” Yet standard micro textbooks still begin with an asocial individual with “given preferences,” and treat society as an add-on. That move is not harmless abstraction. It is the root of our inability to theorize justice—and it quietly pushes us back toward the Thucydidean conclusion that power defines justice.
Geoffrey Hodgson’s How Economics Forgot History names the methodological catastrophe: the switch from historical–qualitative political economy to formal–quantitative modeling trained economists to search for physics-like invariant laws in a domain where the objects of study change through history. When norms, institutions, and even emotional repertoires evolve, the dream of invariant “economic laws” becomes a category error.
MacIntyre’s early chapters help explain why this matters for pedagogy: unless we rebuild economics on deeper foundations, heterodox alternatives will keep peeling back a few layers of error while leaving the deeper frame intact.
Chapter 1: Why modern moral debate doesn’t converge
MacIntyre begins with a diagnostic fact: modern moral arguments about justice do not converge. People argue endlessly—about rights, freedom, equality, harm—yet rarely resolve disagreements by reasoning.
This is not because everyone is irrational. It is because there are no shared standards for what counts as a decisive reason. We use a common vocabulary, but the underlying meanings and the criteria of justification differ.
Economics example: This is exactly what we see when economists debate “fairness” using incompatible welfare metrics. One economist invokes Pareto efficiency; another invokes inequality aversion; a third invokes capabilities; a fourth invokes rights. Each framework is internally coherent, but they cannot be ranked by purely technical means. We pretend the debate is about “evidence,” but it is really about the unspoken moral background that tells us what counts as a reason.
Chapter 2: Rationality is not a context-free technique
MacIntyre’s next move strikes at the heart of economic methodology. Rationality is not a neutral tool that floats above history. Rationality is tradition-constituted: learned within communities that teach what counts as evidence, what counts as progress, and what goods are worth pursuing.
Economics assumes the opposite: one universal maximizing rationality, applicable everywhere, always. That assumption is precisely what makes economics “ahistorical”—and why it keeps producing models that treat moral formation as irrelevant.
Economics example: Take “time preference.” Mainstream models treat discounting as a stable feature of individuals. But historically, attitudes toward patience, debt, thrift, and responsibility are socially constructed. In some eras, usury is condemned; in others it is normalized; in still others, debt becomes a moral obligation and a political weapon. If the moral meaning of debt and patience changes historically, then “discount rates” are not timeless psychological constants—they are socially produced dispositions.
Chapter 3: Justice is not only outcomes; it is practices and processes
MacIntyre argues that justice is not just about final distributions or end-states. Justice is also about the processes and social practices through which life is organized—relations of reciprocity, authority, dignity, obligation, recognition.
This matters because welfare economics routinely reduces justice to numbers. But human beings experience justice through how they are treated, how decisions are made, who has voice, and whether institutions embody respect.
Economics example: Consider labor markets. A purely outcome-based approach says: if wages equal marginal product, the allocation is “efficient,” and questions of justice are external. But workers experience injustice not only through low wages. They experience it through humiliation, insecurity, arbitrary management power, exclusion from decision-making, lack of recognition, and being treated as disposable. These are not “preferences” sprinkled on top of an otherwise complete model; they are constitutive of what justice means in economic life.
Chapter 4: Moral orders evolve—and sometimes collapse
MacIntyre’s method is historical because the problem is historical. Moral orders are not stable. They are built, contested, and vulnerable to breakdown. Under pressure, societies can lose the shared language that once made rational debate possible—and then public reasoning degenerates into rhetoric and faction.
Economics example 1: The historical transformation of “property” shows why invariant economic laws are fantasy. Property has not always meant absolute private dominion. It has taken different forms across societies: communal land, feudal tenure, religious endowments, customary rights, colonial expropriation, corporate ownership, financial claims. As the meaning of property changes, so does what counts as “justice” in exchange, taxation, and distribution. You cannot derive a timeless “law” of justice from a moving target.
Economics example 2: Wage justice itself evolves. In some periods, child labor is “normal”; later it becomes a moral scandal. In some eras, slavery is lawful and profitable; later it becomes a moral abomination. If even the moral perception of labor relations evolves, then the “utility functions” assumed by economics are not stable primitives. They are historical artifacts.
Chapter 5A: When power defines justice, reason becomes rhetoric
The first half of Chapter 5 reaches the sharpest point: Thucydides and Athens articulate the realist thesis—justice applies among equals; where power is unequal, the strong decide what counts as right and the weak are told to accept reality.
This is not merely cynicism. It is a theory of how societies function: justice is an instrument of dominance. When power shifts, “justice” shifts.
Economics example: This realist temptation is embedded in modern economic policy discourse. Consider austerity programs imposed by global financial institutions: they are often presented as “responsible,” “necessary,” “sound economics.” Yet the distribution of pain is structured by power; the vocabulary of necessity supplies moral cover. Or consider trade regimes written by powerful states: “free trade” becomes the name of a system whose rules were designed by those with bargaining power. When power writes the rules and then calls them justice, Thucydides is alive and well.
In other words: if there is no independent standard of justice, then the debate becomes a contest over whose preferences, whose interests, whose institutions get to define legitimacy.
The methodological punchline: economics cannot have invariant laws
Here is the central lesson for economists—especially for those who still dream of “scientific” certainty through mathematics.
If preferences are socially formed, then utility is not a stable primitive.
If emotions are norm-governed, then “well-being” is not a universal quantity.
If fairness is historically conditioned, then “justice” is not an invariant object.
Societies evolve. Norms evolve. Human beings evolve with them.
So economics cannot have physics-style invariant laws. The “laws” of behavior will change when institutions, moral education, and social expectations change.
This is not a weakness of economics. It is the nature of the subject matter. The weakness is our refusal to acknowledge it—and our insistence on formal models that require stability assumptions that are false at the level of first principles.
This is precisely what Hodgson meant by economics forgetting history: treating historical specificity as noise, rather than as the central explanatory challenge.
Why heterodoxy has not “won”
This is where the argument becomes uncomfortable for heterodox economists.
We have an extraordinary range of heterodox approaches: Post-Keynesian, Institutional, Feminist, Ecological, Marxist, Austrian, Complexity, Social economics, and more. Many are insightful. Many correctly identify failures of neoclassical orthodoxy. Some—especially Marxism—are powerful intellectual systems with deep historical and social content.
And yet none has achieved “success” in the one sense that matters for the global conversation: none has become institutionally established as a core school of thought inside the discipline’s main gatekeeping structures. Heterodoxy remains fragmented and marginal, while the neoclassical core continues to dominate hiring, journals, curricula, and policy platforms.
Why?
Because much heterodox critique is not deep enough. It attacks symptoms, tools, or specific assumptions, but accepts too much of the deeper frame: the asocial individual, the given preference, the universal rationality, the pretense that justice can be reduced to outcomes or procedures.
So we keep producing alternatives that still operate within the architecture that generated the crisis. We peel back a few layers of mistakes, but we do not rebuild foundations.
MacIntyre’s gift is to show that rebuilding foundations requires going back far deeper than economists usually go—to the point where the question first becomes unavoidable: is justice grounded in something independent of power, and can rational enquiry escape rhetoric?
This summary sets the stage for the historical problem that confronted Plato: the realist position that takes “justice” to be a decorative cover for the depradations of power. We see a stark illustration in Venezuela and Palestine today. This sets us up to understand how Plato and his student and successor Aristotle constructed a powerful argument for understanding justice within a moral framework not influenced by realpolitik. The argument remains of central importance today.
A personal note: why I’m studying philosophy now
I’ve spent much of my professional life working within heterodox economics, and I remain convinced that mainstream economics is fundamentally broken. But I’ve also come to believe that many heterodox efforts—including my own—do not go deep enough. We correct models, add “institutions,” adjust assumptions, bring in history—but we often leave untouched the underlying conception of the human being and the social world that makes economics drift back toward the politics of power.
That is why, these days, I am studying philosophy, as a way of recovering what economics has lost: the ability to ask foundational questions about reason, justice, moral formation, and the nature of social order.
MacIntyre’s first five chapters are the best guide I have found for understanding why the crisis is deeper than we thought—and why the road forward may require going back to Plato and Aristotle, not as museum pieces, but as thinkers responding to the perennial question that still governs our world: Does might make right?
