From Variety to Virtue

The word diversification did not enter history carrying moral weight. For most of its life, it described a pattern ~ variation across crops, activities, revenues, or risks. Merriam-Webster’s entry keeps that older sense close to the surface: diversification is an increase in variety or diversity, not a virtue by itself. (Merriam-Webster )

The moral charge came later. Later again, a technical idea from agriculture, business, finance, ecology, and development policy was lifted out of those domains and applied wholesale to human populations, as if the same assumptions traveled cleanly from one field to another.

Ideas that migrate across fields often lose their guardrails. Diversification is a clean example of how a situational principle can become a generalized virtue, and then harden into something closer to doctrine.

How did diversity become a modern virtue?

Variety is the Spice of Life

In early modern Europe, diversification did not exist as an abstract public principle. Writers spoke instead of variety.

The argument was practical and local.

Farmers understood that land, weather, pests, and hunger punished dependence. Modern summaries of crop rotation make the old logic clear enough: rotating crops helps manage soil resources, disease, insects, and fertility. (Britannica ) These were not philosophical claims.

They were survival tactics in a world where bad harvests killed people.

The same logic appeared in Enlightenment writing on art and rhetoric. Joseph Addison’s essays on imagination treated variety, novelty, and change as sources of mental pleasure. Burke’s account of taste also worked through distinctions among beauty, proportion, variety, and effect. (Project Gutenberg ) (Project Gutenberg )

The justification was psychological, not moral.

Humans like contrast ~ simple as that.

Variation was self-evidently useful and even beautiful.

Prudence Enters Political Economy

The language shifted as political economy matured. Classical economists recognized a tension that remains familiar ~ specialization drives productivity, while dependence creates exposure.

Adam Smith did not write in the modern vocabulary of diversification. He did make specialization central to productivity. In the opening chapter of The Wealth of Nations, Smith argued that the division of labor produced the greatest improvement in productive power. (Harvard Classics )

That insight created a problem that later economists, farmers, planners, and firms kept rediscovering. Specialization can make production more efficient. It can also make a household, firm, region, or country brittle when the specialized thing fails.

Development agencies now use that logic openly. UNCTAD’s work on commodity dependence treats overreliance on a narrow export base as a source of vulnerability, especially when commodity prices swing. (UNCTAD )

The justification remained narrow.

Diversification was prudent.

The Managerial Turn

In the twentieth century, firms grew larger and more complex, and diversification moved from a farmer’s habit to a corporate strategy.

By 1957, H. Igor Ansoff’s Harvard Business Review article “Strategies for Diversification” placed diversification inside a formal product-market framework. It was not a moral claim. It was a management problem: should a firm seek new products, new markets, or both, and what risks follow from each choice? (EconBiz )

Diversification became common sense within commercial organizations.

There were boundaries. It applied to firms facing uncertain markets, technological change, cyclical demand, or a need for growth beyond the existing product line. It was not a theory of virtue. It was a hedge.

Finance Makes It Mathematical

When Harry Markowitz published “Portfolio Selection” in 1952, diversification crossed a threshold. Under specific assumptions, he showed that combining assets with different risk and return characteristics could change the risk profile of a portfolio. (RePEc )

That mattered because it transformed diversification from experience-based wisdom into a mathematical argument. Modern investor guidance repeats the practical version: spreading money among different investments can reduce risk. (Investor.gov )

Finance gave diversification scientific authority. It was no longer merely sensible. It could be modeled as optimal under stated assumptions.

Those assumptions did a lot of work. They were not decoration. They were the whole deal.

Finance gave diversification a formula, and the formula gave an old habit the weight of proof.

Ecology and the Language of Resilience

Ecology added another source of prestige.

In the twentieth century, ecologists argued over the stability of diverse ecosystems compared with simpler ones. The answer did not become a clean slogan. A 2000 Nature review framed the diversity-stability question as an active debate rather than a settled rule. (Nature )

The public language simplified the lesson. Monoculture sounded brittle. Diversity sounded healthy. Redundancy, overlap, and variation seemed to limit cascading failure.

By the 1970s and 1980s, diversification appeared across development economics, urban planning, and disaster management. The vocabulary shifted again.

Diversity became associated with health, sustainability, and resilience.

That association had evidence behind it in some systems. It also softened the boundary between an empirical claim and a moral one.

What started as a conditional slowly became a good in and of itself.

The Moral Turn

At the end of the twentieth century, diversification stopped being defended only as a tool and started being praised intrinsically.

Organizational theory helped make the move. Roosevelt Thomas’s 1990 Harvard Business Review article “From Affirmative Action to Affirming Diversity” treated diversity as a management and competitiveness question. The Supreme Court moved the concept into constitutional language earlier, when Justice Powell’s opinion in Bakke accepted student-body diversity as an educational interest, and later when Grutter v. Bollinger upheld a version of that rationale. (Harvard Business Review ) (Justia ) (Justia )

The justification was no longer only risk reduction. It became ethical alignment, educational benefit, organizational legitimacy, and national self-description.

That shift is recent. It largely postdates 1970.

In public speech, the line became familiar: diversity is strength.

And it is here that the language became sacrosanct.

When a Tool Becomes a Creed

Diversification works in finance because assets can be priced, weighted, traded, and modeled. It works in agriculture because crops share functional roles inside a field system. It can work in ecology when functions overlap enough that one species can buffer the loss or stress of another.

Human populations are not portfolios.

People do not function as interchangeable units. Cultural cohesion, trust, shared norms, and institutional legitimacy are not divisible inputs that can be rearranged without asking what gets lost in the exchange.

What is the marginal cost of change?

The serious question concerns the kind of heterogeneity, the scale of change, the strength of shared institutions, the presence of a shared story, and the coordination cost.

In some political and bureaucratic settings, diversity ceased to be an observation and became a mandate. Institutions treated demographic mixing as a proxy for moral progress.

Disagreement was no longer technical ~ it was ethical failure.

That is where the idea begins to resemble dogma.

Racial Identitarian Capture

Eventually, perhaps inevitably, diversification was absorbed into racialized frameworks of oppression, representation, and power.

That shift did not happen in one place or all at once. It grew through universities, employers, courts, public agencies, and nonprofit language. The metric narrowed. Diversity came to mean variation in skills, region, experience, class, temperament, or belief only when those things could be subordinated to the visible metric. Proportional representation by ancestry and identity category became the decisive proof. The metric shifted from function to phenotype.

Once that happens, diversification stops being mainly about resilience and becomes obsessed with symbolic purification. Targets become easier to count than trust. Proportions become easier to defend than cohesion. Tradeoffs are pushed into the background.

Failure can be interpreted as insufficient commitment to the good of the community, and the highest good becomes diversity itself.

At that point, the cult of diversification operates like a civic religion ~ complete with taboos, heresies, and moral signaling.

The original logic is almost completely gone.

“How do we manage risk across a portfolio of financial assets?”

Diversification.

“How do we organize a population of human beings in the way most likely to produce health, growth, trust, and long-term stability for citizens?”

Diversification?

When a conditional tool becomes doctrine, the machine starts treating social life as if it were a portfolio.

Why the Prestige Persists

Diversification’s authority rests on a real observation ~ systems that depend on a single input often collapse when that input fails. That lesson was learned through famine, depression, commodity shocks, and financial crisis.

The lesson is strongest in systems where components are substitutable, correlations can be measured, and coordination costs are low ~ ideally a frictionless environment for switching between product lines, crops, suppliers, or financial holdings.

Diversification was not born as a virtue.

It acquired moral weight after repeated success in narrow domains.

Terms are illegitimately applied across disciplines all the time. The social sciences are full of borrowed metaphors from biology, physics, markets, and engineering. The borrowing can clarify. It can also smuggle assumptions from one system into another.

When diversity was universalized and applied to human populations, reality disagreed with the portfolio metaphor.

The evidence on heterogeneity and trust is mixed and contested, not convenient. Robert Putnam’s 2007 essay “E Pluribus Unum” argued that ethnic diversity can reduce social solidarity in the short to medium run. A later Annual Review survey by Dinesen, Schaeffer, and Sønderskov found that the evidence varies by setting, measurement, and mechanism. (Putnam ) (Annual Reviews )

The truth is sharper than the institutional language allows. Diversity of opinion, culture, and worldview is not an absolute good for society. Under some conditions, it can produce creativity, adaptation, and wider experience. Under others, it can produce division, mistrust, administrative coercion, and resentment between groups.

Countries with highly heterogeneous populations face a daunting challenge ~

How do they sustain democratic institutions when the national character that built them has become the big bad villain in the national story?

Managing Social Risk with Diversification?

As a risk-management tool, diversification belongs in the top tier of available strategies. It is age-old wisdom ~ do not put all your eggs in one basket.

As a social program, diversification changes what stabilizes a society. Shared identity gives way to shared procedure.

Informal cohesion yields to forced management.

Diversification prevents concentration in portfolios. In politics, it can prevent majority cohesion. Calling that strength or weakness depends on what you think society is for, and what kind of future you think it should make possible.

The question is not whether diversity is virtuous.

The question is:

What holds a society together when virtue is redefined as variance?

Author’s Note

This essay does not claim that heterogeneity is inherently destructive, nor that cohesion requires uniformity. It argues only that tradeoffs exist. Diversification functions under specific assumptions in finance. When the same language is applied to human societies, those assumptions deserve scrutiny. The goal is not condemnation, but clarity.

If you disagree, push back.

If you see it differently, say so.

What, in your view, holds a society together ~ shared identity, shared procedure, or something else entirely?