The Paradox of Suppression
For most of the twentieth century, the United States Forest Service followed a simple policy: suppress all fires. Every fire was an enemy. Every fire was fought. The goal was zero tolerance. The forests would be protected.
The policy worked, in a narrow sense. Fires were extinguished. Forests remained standing. The visible threat was contained.
But something else was happening beneath the surface. The small fires that had once swept through regularly, burning undergrowth and clearing deadwood, no longer occurred. Fuel accumulated. Dead branches piled on the forest floor. Dense understory grew unchecked. Year after year, the material that would have burned in small, manageable fires instead accumulated, waiting.
When fire finally came, it was not small. It was catastrophic.
The great fires of the late twentieth and early twenty-first centuries burned hotter, spread faster, and destroyed more than the fires of previous eras. They did not just clear undergrowth. They killed mature trees. They sterilised soil. They burned so intensely that forests could not regenerate naturally. The policy of suppression had not eliminated fire. It had transformed fire from a regular, cleansing process into an irregular, devastating one.
This is the paradox of suppression. The attempt to eliminate small disturbances creates the conditions for large disturbances. The system does not become safer. It becomes more fragile.
Fire-Adapted Ecosystems
Not all ecosystems fear fire. Some depend on it.
The longleaf pine forests of the American Southeast evolved with fire. Lightning strikes ignited blazes every few years. The fires burned fast and low, clearing competing vegetation and recycling nutrients into the soil. The longleaf pine adapted. Its thick bark resisted flames. Its seedlings developed deep taproots before sending up vulnerable shoots. The species thrived precisely because fire regularly eliminated its competitors.
Remove fire from a longleaf pine forest and the ecosystem collapses. Hardwoods invade. The understory thickens. The pines, which need open ground and sunlight, cannot regenerate. Within decades, the forest transforms into something unrecognisable. The absence of destruction destroys the system more thoroughly than destruction ever could.
The giant sequoias of California tell a similar story. Their cones require fire to open and release seeds. Their seedlings require bare mineral soil to germinate. Without periodic fire, the sequoias cannot reproduce. A century of fire suppression nearly doomed them, not because fire arrived but because fire did not.
Fire-adapted ecosystems reveal a counterintuitive truth: periodic destruction is not the opposite of health. It is a component of health. The system requires burning to remain what it is.
The Market Parallel
Financial markets exhibit the same dynamic.
Consider what happens during extended periods of stability. Participants observe calm conditions. They reduce their estimates of risk. They increase leverage because volatility is low and borrowing is cheap. They crowd into positions that would be dangerous in turbulent times but appear safe when turbulence is absent. Risk models calibrate to the benign environment. Strategies that depend on continued calm proliferate.
The undergrowth accumulates.
Leverage builds. Crowded positions multiply. Correlations lurk beneath the surface, invisible until stress reveals them. The system appears healthy. Asset prices rise. Volatility remains low. But the fuel is piling up, invisible to those who measure only current conditions.
When the fire finally arrives, it is not small.
A shock that would have caused a modest correction in a less leveraged system now triggers a cascade. Forced selling begets forced selling. Correlations spike as constraints bind simultaneously. The structures that had accumulated during the calm period burn together. The correction is not proportional to the trigger. It is proportional to the fuel that had accumulated.
This is why market crises often seem to come from nowhere. The trigger is small. The response is enormous. Observers search for the cause in the trigger when the cause was the accumulation that preceded it. The spark did not create the fire. The fuel did.
The Cleansing Function
Fire destroys, but it also releases.
When a forest burns, the nutrients locked in deadwood and accumulated debris return to the soil. Sunlight reaches the forest floor for the first time in years. Seeds that had lain dormant, waiting for the right conditions, finally germinate. New growth emerges. The forest that follows the fire is often more vigorous than the forest that preceded it.
Market corrections perform a similar function.
When prices fall sharply, several things happen simultaneously. Over-leveraged participants are forced to exit. Capital that had been locked in overvalued positions is released. Valuations reset to levels that offer better prospective returns. Weak business models that had survived only because cheap capital sustained them are revealed and removed. The participants who remain are those whose structures could withstand the stress.
This is painful for those who are burned. It is also necessary for the ecosystem.
A market that never corrects is a market where misallocated capital never gets reallocated. It is a market where weak participants never exit. It is a market where valuations climb without reference to underlying value, supported only by the expectation of continued support. Such a market does not become stronger over time. It becomes more fragile, more dependent on conditions that cannot persist forever.
The correction is the mechanism by which the market renews itself. It clears the deadwood. It releases trapped resources. It creates space for new growth.
The Intervention Trap
Understanding fire ecology reframes how we think about intervention.
When policymakers observe a market decline, the instinct is to intervene. Cut rates. Provide liquidity. Support asset prices. The immediate effect is relief. The decline stops. Prices stabilise. The crisis appears to have been averted.
But consider what has actually happened. The fuel that would have burned in a smaller fire remains unburned. The leverage that would have been forced to unwind remains in place. The weak participants that would have exited remain in the system. The intervention has not eliminated the risk. It has deferred it.
Worse, the intervention teaches participants that intervention will occur. They adjust their behaviour accordingly. They take more risk because they expect to be rescued. They hold more leverage because they believe volatility will be suppressed. The system becomes more dependent on intervention, not less.
This is the intervention trap. Each intervention creates conditions that make the next intervention more necessary. Each rescue prevents a small clearing that would have reduced fuel for the next fire. The system becomes increasingly fragile even as it appears increasingly stable.
The parallel to fire suppression is exact. The Forest Service did not intend to create catastrophic fires. They intended to protect the forest. But protection from small fires created vulnerability to large fires. The policy that seemed prudent in each individual case produced a system-wide catastrophe.
Stability Breeds Instability
The economist Hyman Minsky observed a paradox at the heart of financial systems. Stability, extended over time, breeds instability.
When conditions are stable, participants become complacent. They extend duration. They increase leverage. They take risks they would not take if they remembered what instability felt like. The very stability of the environment encourages behaviour that undermines that stability.
Minsky’s insight maps directly onto fire ecology. A forest that has not burned for many years is not a safe forest. It is a dangerous forest. The absence of fire has allowed fuel to accumulate. The longer the calm persists, the more severe the eventual burn.
Markets work identically. The longer volatility remains suppressed, the more participants position for continued suppression. The more they position for suppression, the more violent the eventual eruption when suppression fails. The calm period does not reduce risk. It transforms visible risk into hidden risk. It converts frequent small fires into infrequent large fires.
This is why experienced practitioners often grow nervous during extended calm periods. They understand that the fuel is accumulating. They cannot know when the fire will arrive, but they know that the arrival becomes more dangerous with each passing month of calm.
Living With Fire
Modern fire management has learned from a century of mistakes.
Prescribed burns deliberately set small fires under controlled conditions. The fires clear accumulated fuel before it can build to dangerous levels. They are managed, monitored, and contained. They cause short-term disruption but prevent long-term catastrophe.
The philosophy has shifted from suppression to management. Fire is no longer the enemy. Fuel accumulation is the enemy. Fire is the tool that prevents fuel from becoming deadly.
Markets have not fully learned this lesson.
The instinct to suppress volatility remains strong. The political pressure to prevent corrections is intense. Each decline triggers calls for intervention. Each intervention is justified by the immediate pain it prevents.
But the framework of fire ecology suggests a different approach. Small corrections are not the enemy. They are the prescribed burns that prevent catastrophic fires. They clear leverage before it becomes systemic. They reset expectations before they become delusional. They remove weak participants before their eventual failure can cascade.
The question is not how to prevent all fires. The question is how to ensure that fires remain small enough to be cleansing rather than catastrophic.
The Reframe
Stop treating volatility as the problem.
Volatility is the fire that clears deadwood. It is the mechanism by which markets correct excess, punish complacency, and release misallocated capital. A market without volatility is not a healthy market. It is a forest where fuel accumulates unchecked, waiting for the inevitable spark.
Start treating suppressed volatility as a warning.
When conditions are calm, when volatility is low, when leverage is high, when everyone believes risk has been eliminated: that is when the fuel is accumulating. That is when the eventual fire will be most severe. The absence of burning does not mean the absence of danger. It means the danger is building.
The participants who survive are not those who avoid all fires. That is impossible. They are those who recognise that fire is part of the system, who position themselves to survive burning, who do not mistake calm for safety.
Small fires are the price of avoiding large fires. Corrections are the price of avoiding crashes. Volatility is the price of stability.
The forest that burns regularly is the forest that endures.
The market that corrects regularly is the market that survives.
Build to burn.
This is the sixth article in a series exploring markets as living systems. Previously: “Predator and Prey,” on the evolutionary arms race in markets. Next: “Scars and Seasons,” on how markets remember trauma.
Want the theoretical foundation for why trend following works?
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