Hello! Welcome to the fifth lesson in our course.
Introduction
In our last lesson, we framed the core tension between natural justice (based on desert and entitlement) and social justice (based on fairness and correcting for arbitrary luck). We saw how these two traditions start from different foundational 'oughts', leading to profoundly different conclusions about what a just society looks like. This set up a duel between two competing principles.
Today, we take a step back and question the very structure of that duel. Must a theory of justice—or any moral theory—be a contest to crown a single, supreme value? This brings us to this lesson's learning outcome: to identify monist versus pluralist approaches to value (single supreme value vs. multiple incommensurable values).
- Monism is the view that there is ultimately only one fundamental value (e.g., utility, liberty, or equality). All other apparent values are merely instrumental in achieving this single "supervalue."
- Pluralism is the view that there are multiple, genuine, and irreducible fundamental values that can, and often do, conflict.
This distinction is a powerful analytical tool that cuts across the other categories we've discussed. Understanding it is essential for analyzing the "macro-level societal architecture" you're interested in, as different systems are often implicitly designed around monist or pluralist assumptions. It also speaks directly to your goal of understanding the "least bad points" in a system, a problem that becomes particularly sharp under value pluralism.
Let's begin by building a clear conceptual toolkit for distinguishing these approaches.
1. Foundational vs. Surface-Level Pluralism
At first glance, almost everyone seems to be a pluralist. We talk about many good things: friendship, knowledge, health, beauty, and so on. The philosophical question is whether these are all just different flavors of one underlying good, or if they are genuinely distinct at the most fundamental level.
This leads to the most important distinction in this topic: the difference between what is good versus what makes something good.
Monism and Pluralism about Value
The following text, 'Monism and Pluralism about Value' by Chris Heathwood, provides a very clear framework for thinking about this. It distinguishes between the things we value and the ultimate reason or property that makes them valuable.
Please read the following sections: Start with section 8.1.2 ('Axiological Preliminaries') to understand the value distinction between basic intrinsic value and derivative intrinsic value. This sets up the main idea. Then, read section 8.1.3.1 ('Substantive Monism about Welfare') for examples of welfare monism and 8.1.3.2 ('Substantive Pluralism about Welfare') for examples of welfare pluralism. Finally, read section 8.1.3.3 ('Which Things Are Good versus What Makes Them Good'). This crucial part crystallizes the distinction. Focus on the concept of a 'good-maker'.
As Heathwood clarifies, the debate isn't about how many things appear on a list of "goods." The real question is at the foundational, or "good-making," level.
- A foundational monist believes there is only one good-maker. For example, a hedonistic utilitarian is a monist. They can agree that friendship and knowledge are good, but they are only good because and insofar as they produce pleasure. Pleasure is the single good-making property.
- A foundational pluralist believes there are multiple good-makers. For a pluralist, knowledge might be good simply because it is knowledge, and friendship might be good simply because it is friendship. Their value doesn't derive from some other, more fundamental source. They are good in themselves, and their "goodness" is of a different kind.
This distinction is key. A theory can appear pluralist on the surface by valuing many things, but be deeply monist in its structure.
2. Monism and Pluralism Across Different Theories
The monist/pluralist divide is not the same as the consequentialist/deontological divide we discussed in the first lesson. Instead, it represents a structural choice within those broader families of theories.
Value Pluralism - Stanford Encyclopedia of Philosophy
Let's see how this plays out in practice. The Stanford Encyclopedia of Philosophy article on 'Value Pluralism' gives excellent examples of monist and pluralist versions of both consequentialist and deontological theories.
Please read the second half of the introduction, starting from 'Deontologists can clearly be monists or pluralists...' through to the end of that subsection. This will show you how the distinction applies to familiar ethical frameworks.
To summarize and consolidate:
| Ethical Framework | Monist Version | Pluralist Version |
|---|---|---|
| Consequentialism | Classical Utilitarianism: Only one thing has basic intrinsic value: happiness or pleasure. All actions are judged by their ability to maximize this single variable. | Objective List Theory: Several things have basic intrinsic value (e.g., knowledge, friendship, achievement). A good outcome is one that realizes a balance of these distinct goods. |
| Deontology | Kantianism: There is one supreme principle of morality, the Categorical Imperative. All specific duties (don't lie, help others) are derived from this single rule. | Ross-style Pluralism: There is a plurality of fundamental, self-evident duties (prima facie duties) like fidelity, reparation, gratitude, and justice. There is no single master-principle that unifies them. |
This table helps you see how monism and pluralism are about the architecture of value itself.
3. The Appeal of Pluralism: The Texture of Moral Life
Why would anyone choose the messiness of pluralism over the elegance of monism? Pluralists argue that their view better captures the actual experience of making difficult moral choices.
Key arguments for pluralism include:
- Value Conflict and Rational Regret: When we are forced to choose between two good things—for example, spending time with a sick friend (loyalty) versus finishing a critical project (duty)—the choice feels like it involves a real, uncompensated loss. If both were just means to a single supervalue like "utility," choosing the option with more utility should feel like choosing a larger sum of money over a smaller one—a clear win with nothing to regret. The fact that we feel rational regret suggests the lost option had a unique kind of value that wasn't simply "topped up" by the chosen one.
- Incommensurability: This is a core concept in pluralism. Two values are incommensurable if they cannot be measured on a common scale. How much "liberty" is a certain amount of "security" worth? Pluralists argue there's no straightforward exchange rate. This is not to say they are incomparable—we can still make rational choices (a great deal of security might be worth a trivial loss of liberty)—but that the choice isn't a simple mathematical calculation.
Your background in optimization provides a useful analogy here. Monism is like solving a problem with a single objective function: maximize . Pluralism is analogous to multi-objective optimization, where you have several conflicting objectives (). There is no single "optimal" solution, but rather a Pareto frontier of efficient solutions. On this frontier, you cannot improve one objective without making another worse. For a pluralist, the landscape of moral and political choice looks like this frontier; it's a domain of trade-offs, not single-value maximization.
4. The Monist Rebuttal: Explaining Complexity
Monists don't deny that moral life is complex. However, they argue that this complexity can be explained without resorting to foundational pluralism.
Monism and Pluralism about Value
Monists have clever responses. They argue that the appearance of plurality can be explained by a foundationally monist theory. The 'explanatory inadequacy' argument is a particularly powerful challenge to pluralism.
Please read section 8.2.2, 'The Argument from the Explanatory Inadequacy of Substantive Pluralism'. Starting below the section heading, read the full argument. This directly challenges the pluralist to justify their list of basic goods.
The monist's case rests on two main strategies:
- Explaining Apparent Plurality: Monists can use concepts that should be familiar from your economics background to explain complexity. For instance, diminishing marginal value (or utility). A monist can argue that while pleasure is the only good, the thousandth unit of pleasure from eating cake contributes far less to our overall well-being than the first unit of pleasure from gaining knowledge. This explains why we seek a variety of goods without needing to assume they are foundationally different in kind.
- The Virtue of Simplicity and Explanatory Power: As the reading highlighted, monism seems to have an advantage in theoretical elegance. A pluralist offers a list of basic goods (e.g., knowledge, friendship, autonomy). The monist can always ask: Why those things? What do they have in common that makes them good? The pluralist's answer is "Nothing, they just are." The monist, by contrast, provides a unifying explanation: "They are all good because they all produce X." This is often seen as a more complete and satisfying explanation.
Test your understanding!
A city council has a budget surplus. It is debating between two options:
- Fund a new, world-class modern art museum.
- Give every citizen a tax cut of an equivalent amount.
How would a foundational monist (like a classic utilitarian) and a foundational pluralist frame this decision differently?
Show answer
A foundational monist (utilitarian) would approach this as a calculation problem. They would try to convert both outcomes into a single currency: "utility" or "happiness." They would ask questions like:
- How much total happiness will the museum generate for its visitors over its lifetime?
- How much total happiness will the tax cut generate as people spend their extra money?
- Which option produces the greater aggregate utility?
The goal is to find the single best answer by measuring both options on the same scale. The values of "artistic appreciation" and "economic well-being" are treated as instrumental to the higher value of "happiness."
A foundational pluralist would see this as a conflict between different, incommensurable kinds of value. They might identify the competing values as, for example, "cultural flourishing/aesthetic value" vs. "individual autonomy/welfare."
- They would argue that these two values cannot be perfectly translated into a common currency. The museum provides a type of public good and cultural value that is fundamentally different from the private good of individual wealth.
- The decision is not a matter of calculation, but of judgment and trade-off. Choosing one option means accepting a genuine, uncompensated loss of the other type of value. The debate would be about which value the community ought to prioritize in this instance, acknowledging that something important will be lost either way.
Conclusion
We have now added a crucial meta-ethical layer to our analysis. Before we even ask what is just, we can ask about the very structure of value that any theory of justice assumes.
Key Takeaways:
- Monism posits a single foundational value or "good-maker," offering theoretical simplicity and explanatory power.
- Pluralism posits multiple, irreducible foundational values, arguing this better reflects the complexity, conflict, and "tragic choices" of our moral lives.
- The key is to distinguish foundational pluralism (multiple good-makers) from surface-level pluralism (many good things that are valuable for a single reason).
- This distinction helps us classify and analyze theories of justice more deeply, revealing their underlying assumptions about the nature of value itself.
Preview of the next lesson:
This lesson has established the possibility that values like justice, liberty, and equality are distinct and can conflict (the pluralist thesis). Our next lesson, "Analyze the relationship between justice and other primary values like liberty, equality, and welfare," will dive into the specifics of these conflicts. We will explore the classic trade-offs and compatibilities between these core political values, building the tools needed to eventually evaluate the complex societal architectures you are keen to analyze.