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When Nature Becomes Our Greatest Teacher
What if our most sophisticated security systems have been outperformed by the humble octopus for billions of years? In Rafe Sagarin's groundbreaking exploration of natural security, we discover how organisms from tide pools to tropical forests have developed remarkably effective adaptations that human institutions consistently fail to match. As terrorism, climate disasters, and pandemics challenge our conventional approaches, this revolutionary perspective has captured attention across disciplines-from military strategists to Silicon Valley innovators. Former Secretary of Defense Robert Gates called it "essential reading," while Jane Goodall praised its "profound insights into how nature's wisdom can help us solve human problems." Through vivid examples and compelling storytelling, Sagarin bridges the gap between evolutionary biology and national security, revealing how 3.5 billion years of natural adaptation offers solutions to our most pressing challenges.
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The Fundamental Contrast: Adaptation vs. Planning
When the 2004 Indian Ocean tsunami struck, animals across three continents sensed the danger and fled to higher ground-while 225,000 humans perished despite our technological advantages. This stark contrast illustrates the fundamental difference between natural and human security systems. While animals rely on adaptable responses refined over evolutionary time, humans often depend on rigid technological solutions that fail catastrophically when circumstances change.
This same pattern played out during the Iraq War, when Secretary of Defense Donald Rumsfeld infamously told soldiers concerned about inadequate vehicle armor, "You go to war with the Army you have." While soldiers quickly identified improvised explosive devices (IEDs) as their greatest threat and adapted by scavenging scrap metal to protect their vehicles, the Department of Defense's formal procurement system took years to develop mine-resistant ambush-protected vehicles (MRAPs). By the time these expensive solutions arrived, nearly 1,600 additional soldiers had died, and insurgents had already adapted new tactics.
The contrast couldn't be clearer: natural systems don't plan, predict, or seek perfection. Instead, they adapt continuously through variation, selection, and replication-the fundamental mechanisms of evolution. This adaptability allows organisms to respond effectively to unpredictable threats without central control or perfect information. Meanwhile, human security institutions remain trapped in rigid planning cycles that fail to address emerging challenges.
What makes this contrast particularly troubling is that humans are theoretically capable of tremendous adaptability. We possess the cognitive tools to learn from experience, imagine possibilities, and implement creative solutions. Yet our institutions systematically suppress these natural capabilities in favor of centralized control, standardized procedures, and technological fixes that rarely match the complexity of real-world threats.
The key insight is that security isn't about developing perfect answers to specific problems-it's about creating flexible systems capable of solving problems wherever they arise. This natural security approach doesn't depend on technological advances, doesn't require top-down design, and can't be classified-it's openly displayed in the structure and behavior of organisms all around us.
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Learning as the Foundation of Security
Learning lies at the heart of all security situations. Nearly every security problem stems from past failure to learn, and every security response requires learning to prevent recurrence. In nature, learning takes many forms-from single dramatic lessons to ongoing processes of selection and adaptation.
Humans tend to be provincial about learning, assuming little can be learned from non-human species. However, almost all human learning modes exist in other organisms. Tool-making was once considered uniquely human until chimpanzees were discovered fashioning specialized tools, and even octopuses collect coconut shells to construct protective armor when threatened. The supposed barrier of "sense of self" has been shattered by primates and possibly the mimic octopus, which transforms itself into other animals with apparent awareness of its deception.
Our security approaches often resemble simple associative learning-like dogs trained to avoid rattlesnakes through electric shocks. This creates a specific response to a specific threat but lacks adaptability to new challenges. After the 2001 anthrax attacks, we developed an association between mail and terrorism, implementing rigid security measures like mail irradiation that are easily circumvented by determined adversaries.
The adaptable learning process is fundamentally driven by natural selection-requiring variation, selective force, and consequences. Through learning to discriminate fine differences between signals, organisms develop the crucial ability to generalize and respond to novel stimuli. Animals can even learn to learn differently, adapting their learning capacity based on environmental conditions. This warns us that no security adaptation is permanent, as adaptable enemies can always learn to overcome it.
If individual humans learn in complex ways, organizations composed of humans should also have learning capacity. In nature, learning occurs at multiple levels-from immune systems to individual organisms to species evolution. Yet organizations often fail to learn from past experiences, like American automakers who seemed to forget lessons from the 1970s gas crisis when SUVs later fell from favor.
The organizational learning literature borrows biological concepts but quickly strays into theoretical constructions and flow charts. Even "realists" who collect data about actual companies remain constrained by business thinking, particularly the misappropriation of Darwinian thought as "survival of the fittest." This leads to an obsession with optimization and benchmarking rather than true adaptation.
Natural learning isn't deliberate or optimized. Most organisms learn without conscious awareness, through Darwinian selection and reproduction of variants that learn appropriate lessons from environmental challenges. We face a particular challenge with low-probability, high-impact events like Pearl Harbor or 9/11, where direct experience is limited. Organizations can learn from minimal experience in three ways: by deepening their experience of events, by involving diverse analysts, or by creating hypothetical scenarios.
Babies exemplify this approach-they have little experience with the world yet develop into adaptable adults through observation and imagination. Like naturalists such as Darwin (who painstakingly studied barnacles to understand biological variation), babies create hypotheses about how the world works and test them. Their imagination is contextualized and scientific-they observe, imagine possibilities, test hypotheses, and reject what doesn't work.
Security organizations need this same approach-not the "anything goes" imagination that dominated after 9/11, but scientific imagination that tests multiple possibilities. Unlike typical centralized organizations that assign single teams to analyze problems, adaptable systems need networked learning. The rapid passenger response to the changed hijacking tactics on 9/11 demonstrates how networked humans can adapt almost instantaneously when information is shared.
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Decentralization: Nature's Organizational Principle
Understanding natural security systems requires observing how organisms interact and change over time. Paleontologist Geerat Vermeij, blind since age three yet possessing remarkable tactile observation skills, discovered a critical pattern in nature: centrally controlled organizations rarely thrive. Instead, successful biological systems farm out environmental sensing to multiple agents with significant response authority.
This decentralized pattern appears at every biological level. The vertebrate immune system works by deploying independent cells that identify invaders without predetermined "watch lists," then mobilize appropriate responses. Our brains store different aspects of memories in different locations, creating robust networks that survive localized damage. Birds evolved from dinosaurs by decoupling bones to allow independent movement. Colonial organisms like corals develop specialized clones for different functions. Schools of fish maintain collective safety through individual responses rather than central leadership.
The contrast between centralized and decentralized approaches is vividly illustrated by comparing two military development projects: the V-22 Osprey aircraft and the autonomous vehicle "Stanley." The Osprey, a helicopter-airplane hybrid, was developed through traditional centralized procurement over 25 years at a cost of $27 billion. Despite this massive investment, the aircraft suffered numerous fatal crashes and performance problems.
Meanwhile, DARPA's Grand Challenge for autonomous vehicles took a radically different approach. Rather than specifying how to build a self-driving car, they simply posed the problem: create a vehicle that could navigate a desert course without human intervention. The modest $1-2 million prize attracted over 100 entries, mostly from university engineering departments motivated by the professional challenge and potential prestige.
The first year's competition ended with complete failure-vehicles crashed, veered off course, or simply sat motionless. But rather than abandoning the approach, DARPA ran the challenge again. Teams learned from mistakes, shared information, and developed new solutions. By the second year, Stanford's "Stanley" (an oddly blue-painted Volkswagen Touareg) successfully completed the course.
This challenge-based approach exemplifies natural adaptation: posing problems rather than dictating solutions, encouraging multiple problem-solvers with diverse perspectives, allowing specialized focus on sub-problems, and removing preconceived notions about methodology. This model has spread to other domains-from the World Wildlife Fund's bycatch reduction challenge for fishermen to competitions for cleaning Deepwater Horizon oil.
Ironically, the Osprey's one success came through its decentralized manufacturing across 2,000 subcontractors in over 40 states, creating the Congressional Tilt-rotor Technology Coalition that ensured its political survival through redundant congressional support-a biological principle that would prove essential to security.
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Redundancy: Nature's Insurance Policy
We typically view redundancy as wasteful-something to be eliminated through efficiency measures, "trimming the fat," and "rightsizing." Yet redundancy is ubiquitous in nature, where organisms constantly struggle for minimal survival resources. This paradox reveals how nature uses redundancy adaptively in ways human systems could learn from.
Nature employs both simple and sophisticated redundancy strategies. "Unimaginative redundancy" involves basic repetition-multiple copies of important genes protecting against DNA damage, centipedes with numerous identical legs, or species producing excessive offspring knowing few will survive. This simple safety-in-numbers approach can be sufficient, as demonstrated after 9/11 when financial markets created backup infrastructure in multiple locations.
Insurgent forces and small armies leverage redundancy by deploying numerous small fighting units with Toyota pickups and light weapons rather than expensive military hardware. Military analysts like William Owen note that these "Toyota hordes" can inflict significant damage on larger forces through distributed engagement. Similarly, John Arquilla warns of terrorist "swarms" that attack multiple sites simultaneously, requiring counter-swarms of "good enough" forces rather than concentrated elite units.
However, human security systems can't ethically accept the mass casualties implicit in simple redundancy. Instead, we should study nature's "imaginative redundancy," where multiple problem-solvers employ different methods, creating diverse backups that won't fail identically against new threats.
Networks represent the ultimate redundant systems, with the Internet being the prime example-billions of observers operating in a constantly changing architecture. Network scientists like Alessandro Vespignani study the Internet "as a natural phenomenon," noting striking similarities between digital networks, terrorist networks, and ecological relationships. Networks form through preferential linking, creating important hubs alongside many less-connected nodes, whether in digital spaces or tide pools.
Ecologist Eric Berlow demonstrates how network analysis can transform complicated problems into more manageable complex ones, as he did by analyzing U.S. strategy in Afghanistan. Networks respond rapidly to change, like our skin's nerve cells becoming crucial hubs when injured. However, interconnected networks can become vulnerable to cascading failures, as shown by the 2010 Icelandic volcano eruption that paralyzed European air travel when a single disruption rippled through transportation systems.
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Beyond Stability: Living with Escalation
The 1983 film "War Games" dramatically illustrates how some conflicts cannot be won, as a computer learns through playing games against itself that nuclear war, like tic-tac-toe between perfect players, inevitably ends in mutual destruction. This concept of "mutually assured destruction" (MAD) maintained stability during the Cold War, with both superpowers understanding that using their nuclear arsenals would be catastrophic for everyone.
Nature shows similar patterns. Male fiddler crabs with their enormously oversized claws rarely engage in actual combat, instead sizing each other up and having the smaller-clawed crab back down without fighting. This system works because both crabs have similar resources, adapt in similar ways, and share the same goal of mating.
However, today's security challenges bear little resemblance to these stability-based models. Modern conflicts typically involve asymmetric resources (like al-Qaeda versus the U.S. military), different adaptation pathways (insurgents changing tactics rapidly while formal armies follow standard procedures), and fundamentally different objectives (hackers causing chaos versus organizations maintaining operations).
With humans determined to create escalation even from stability, and few natural models to guide us, we must learn to survive in a constantly escalating world. We need to study environments where conflict continues to brew, weapons grow deadlier, strategies become increasingly clever, and tiny organisms can devastate powerful ones.
The Red Queen hypothesis provides a useful framework-organisms must continually adapt just to maintain their relative fitness compared to competitors. This leads to evolutionary arms races where opposing sides continuously improve speeds, armaments, defenses and tactics. Contrary to what one might expect, this escalation has sustained itself for 3.5 billion years, with brief explosive periods of diversification filling ecological niches.
Geerat Vermeij's fossil studies confirmed that through time, defensive traits become more common, organisms become better adapted to their environment, and biological hazards grow more severe. This escalating struggle drives remarkable innovation and diversity-from sea anemones developing stinging cells to nudibranchs that repurpose these stinging cells for their own defense.
In human conflicts, insurgents adapt to new U.S. military tactics within about fourteen days. However, speed of adaptation isn't everything-what matters is which adaptations effectively solve problems. Evolutionary escalation occurs because of differences between organisms in resources, motivation to change, and information use.
Counter to intuition, superior resources don't guarantee success in evolutionary escalation. Viruses, locusts, superweeds, bedbugs and antibiotic-resistant bacteria all demonstrate how organisms with minimal resources can overcome well-resourced opponents. The 9/11 attacks cost al-Qaeda less than $1 million yet caused billions in damage. Often the best adaptations require minimal resources-like soldiers welding scrap metal to Humvees rather than waiting for expensive MRAPs.
Motivation plays a crucial role through the "life-dinner principle"-prey fighting for their lives adapt more urgently than predators merely seeking a meal. Similarly, drug dealers facing imprisonment adapt more rapidly than law enforcement officers who might just miss a promotion.
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Information Management in Uncertain Environments
Information provides a pathway for adaptation that can slip around even resource-rich opponents. In nature, secret codes, deception, and double crossing are common survival tactics. Information sharing can be essential to survival, with organisms seeking to reduce uncertainty for themselves while increasing it for adversaries. This principle explains complex behaviors like birds flocking to confuse predators or cicadas emerging on prime-number-year cycles to avoid predator population booms. Paradoxically, our security screening often reverses this natural rule-making life less uncertain for adversaries while increasing uncertainty for ourselves through constant, ambiguous warnings that create stress without providing clear guidance.
Natural systems share information in myriad ways, but all coalesce around a single principle: organisms seek to reduce uncertainty for themselves and increase it for adversaries. Birds flock to confuse predators about individual vulnerability, while predators use camouflage to hide attack timing. Periodical cicadas exploit prime-number cycles (17, 13, or 7 years) to emerge when predator populations can't anticipate them. By contrast, our security screening tragically reverses this-broadcasting exactly what we're looking for, reducing adversary uncertainty while increasing our own through constant, ambiguous warnings like the color-coded threat system that remained unchanged at "orange" for years, creating stress without providing useful information.
Signaling helps manage uncertainty in nature, with many mimics not needing perfect imitation to be effective-just enough to confuse predators momentarily. Sometimes too-perfect mimicry creates problems, as with tropical butterflies whose males waste time determining if potential mates are actually their species. Cuttlefish demonstrate effective camouflage not through perfect matching but by creating disruptive patterns with their swaying arms that make it difficult for predators to distinguish them from the background-a technique that's attracted military interest.
The most effective signals are honest ones that accurately reflect fitness, like a deer's roar depth indicating body size or a peacock's bright feathers showing nutritional status. Animals target signals precisely to different receivers-cuttlefish use visual displays for fish predators but flee from crabs that hunt by smell, while ground squirrels make alarm calls for predators that can hear but heat their tails when facing rattlesnakes that detect infrared.
Our faces reveal more honest signals than we might realize. Hockey players with wider faces relative to height tend to accrue more fighting penalties, likely due to higher testosterone during development. Humans across cultures can accurately assess upper body strength just by looking at faces. This biological legacy of facial and behavioral pattern recognition represents a natural security system that can be leveraged for safety.
Like highly social animals such as wasps, wolves, primates, and crows (which remember human faces that mistreated them for life), humans have evolved specialized brain regions for recognizing faces and behavioral patterns. Behavioral screening at airports provides a redundant defense against multiple types of threats without relying on racial profiling, as Darwin noted common expressions exist across human cultures. Unlike technological screening, behavioral observation returns control of uncertainty to security personnel, as one Dulles Airport screener noted: "The observation of human behavior is probably the hardest thing to defeat."
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The Evolutionary Roots of Belief Systems
Salmon and suicide bombers share a surprising commonality-both engage in seemingly self-destructive behaviors that serve evolutionary purposes. While we don't call salmon irrational for their fatal spawning journeys, we readily apply such labels to human suicide bombers. The key difference isn't physical but environmental: salmon still live in the environment they evolved in, while humans don't.
When English teacher Gillian Gibbons was imprisoned in Sudan for allowing students to name a teddy bear Mohammed, Western observers were baffled by the seemingly irrational reaction. Yet virologist Luis Villarreal discovered that deeply held beliefs-even scientifically indefensible ones-persist among highly intelligent people for evolutionary reasons. His research revealed that human belief systems trace back to primitive life forms, functioning like addiction modules in bacteria. These modules consist of paired genes-a toxic gene that destroys foreign bodies and an antitoxic gene providing immunity to the host-creating a fundamental self/non-self distinction mechanism that has evolved into modern human belief systems.
This evolutionary perspective explains why people hold irrational beliefs so tenaciously-they're ancient survival mechanisms for group identity. The same self/non-self identification system appears in salmon, whose vomeronasal organ (VNO) drives them relentlessly back to their birth streams despite obstacles. While humans turned off our VNO systems, we developed written symbolic language as our primary group identity marker, particularly evident in religious texts and practices. Religious beliefs function as strongly addictive systems because they substitute symbolic group identification for rational testing, with costly signaling (sacrifices, rituals) serving to strengthen group bonds and attract new members.
Though belief systems have deep evolutionary roots, they aren't immutable. Symbolic tradeoffs can open doors to negotiation when sacred values collide-like China's ping-pong diplomacy with the US or Mandela preserving the Springbok rugby team despite its apartheid associations. These gestures are essential first steps but rarely solve conflicts entirely. Sacred values themselves evolve under pressure-they harden when threatened (as seen with US right-wing militias during perceived anti-gun administrations) but become malleable when accepted.
The timing for substituting belief systems matters greatly-adolescence represents a critical window when the changing brain architecture, risk-taking behavior, and rites of passage create vulnerability to indoctrination. This same plasticity offers opportunity for intervention-Scott Atran suggests creating alternative pathways like secular soccer clubs to provide the same social bonds and group identity that terrorist organizations exploit.
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The Power of Symbiosis in Security
The dramatic reduction in IED attacks in Iraq during 2007 came not just from technological solutions like jamming devices or resistant vehicles, but primarily through symbiosis-working relationships between diverse parties. Electronic warfare officers collaborated with soldiers to develop effective jamming that wouldn't interfere with communication. More crucially, Americans formed relationships with local leaders who provided intelligence on IED networks. These partnerships, like biological symbioses, emerged between seemingly opposed parties and transformed communities as civilians began sharing information, marking the beginning of rapidly declining IED attacks.
Every organism on Earth exists as a collection of different organisms bound together through symbiotic relationships. These partnerships create emergent properties beyond the sum of their parts-like lichens breaking down rock into soil (their biomass exceeding that of all oceans) or deep-sea fish housing bioluminescent bacteria to hunt in darkness. Some symbiotic relationships are manipulative-parasites force behavioral changes in hosts, like guinea worms causing humans to seek water when the worm needs to release larvae. Yet symbiosis often yields broader benefits: monkeys forced into cooperation show reduced overall conflict, and reef fish with cleaner wrasse partners become less aggressive toward all fish.
Nature reveals cooperation's true power when it emerges between seemingly incompatible species-like predatory fish and their tiny cleaners. Similarly, human society has developed remarkable partnerships between traditional enemies. Terence Taylor has facilitated collaborations between Israelis, Palestinians, and Jordanians, as well as six historically hostile Mekong River nations, all working together to combat disease outbreaks regardless of borders. These networks demonstrate extraordinary success-gaining access to restricted Myanmar after cyclone devastation and responding to H1N1 before WHO alerts. They've produced tangible benefits, including the first Israeli-Palestinian co-authored scientific paper since World War II.
The conundrum of mutualism's prevalence despite its theoretical instability challenges Darwin's view that unstable intermediate forms don't persist. Elinor Ostrom's Nobel-winning work offers insight-humans create formal and informal rules preventing over-exploitation of common resources, like Mexican fishing cooperatives restricting abalone access to elders and using graduated punishments starting with public embarrassment.
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Embracing Natural Security Systems
While we've long employed animals as security tools-from Hannibal's elephants to bomb-sniffing dogs-these represent only a fraction of nature's security services. Our most valuable natural security systems are those we haven't deliberately modified, operating through evolutionary processes at every biological level. These systems, whether forgotten, newly discovered, or recently revalued after tragedies, remain vastly underutilized. Worse, our "intelligently designed" security systems often damage or replace natural ones with inferior alternatives.
Our bodies possess evolved defense mechanisms we foolishly override for temporary comfort. Fevers, for instance, create optimal conditions for immune response-all vertebrates develop them because immune systems function better at higher temperatures. Yet doctors routinely prescribe fever reducers for patient comfort rather than letting this natural security system work.
This disconnect between medical knowledge and practice drives "Darwinian medicine," which respects evolutionary strategies underlying disease responses. While conventional doctors treat symptoms like jaundice by reducing bilirubin, evolutionary perspectives recognize bilirubin's role as a powerful antioxidant. Similarly, antibiotic overuse creates super-resistant bacteria by selecting for hardier varieties-now recognized as a major threat causing many hospital deaths.
For emerging infectious diseases, our best defense combines vaccines with maintaining natural diversity. Research shows that diverse ecosystems dilute disease transmission-mice transmit Lyme disease at 90% efficiency versus squirrels' 15%, West Nile increases when bird diversity declines, and schistosomiasis decreases with healthy predatory fish populations. Protecting habitats therefore helps control disease spread, as forest clearing benefits malaria mosquitoes and wetland destruction increases West Nile prevalence.
The border wall between the US and Mexico demonstrates our problematic reliance on walls, costing up to $10 million per mile while only slowing immigrants by about twenty minutes. As former Arizona governor Janet Napolitano noted, "You show me a 50-foot wall and I'll show you a 51-foot ladder."
From physical to digital to biological worlds, hardened security systems often create more damage inside their defenses. In New Orleans, the worst flooding occurred inside the levee walls. Similarly, cybersecurity experts build "perfect" firewalls despite Microsoft Office containing an estimated million bugs, creating an illusion of security that determined hackers easily breach.
Instead of rigid barriers, we could create living security systems. Natural wetlands offer superior protection against flooding while simultaneously filtering water, reducing greenhouse gases, supporting fisheries, and increasing biodiversity that helps control disease. Yet bureaucratic barriers persist-in North Carolina, concrete seawalls require only simple permits while superior living shorelines demand costly "major permits."
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Toward an Adaptable Future
Adaptation requires leaving our comfort zone, yet we resist this natural imperative despite nature's overwhelming evidence that adaptability works. We claim our bureaucracies are too institutionalized to change, yet even organisms unchanged for millions of years adapt through semi-independent parts. We insist certain conflicts are irreconcilable, while nature shows the meekest organisms forming symbiotic relationships with the most terrifying.
Despite appearing removed from natural selection, humans face contradictory realities-we've insulated ourselves from evolutionary pressures while still being profoundly affected by natural forces. Though individually adaptable in emergencies, we create rigid, non-adaptable institutions that constrain our natural flexibility.
The solution is creating an "adaptable cascade" where small adaptable actions trigger others, generating momentum toward increasing adaptability. This brings all components of natural adaptive systems: decentralized organization of semi-independent problem solvers, accelerated learning through success selection, useful redundancy, symbiotic partnerships, and better protection of natural ecosystem services.
The biological concepts of adaptability apply equally to non-security aspects of our lives and institutions. The fundamental connection between biology and security-that both organisms and societies face highly variable and unpredictable threats-extends to nearly everything human: from a child's moods to stock portfolios to ecological conditions. We can't predict these changes reliably, so we must develop adaptability to thrive in a world where tomorrow's problems will differ from yesterday's.
At this crossroads, we can either retreat from biological complexity or embrace it despite incomplete understanding. Even partial understanding of nature yields surprising insights in an era when we've forgotten nature's mind-expanding power. Though we may lack the luxury of Darwin's five-year voyage or Muir's Sierra summer, nature remains accessible-its diversity staggering, its mysteries profound, and its lessons freely available. It's time to reconnect with nature's wisdom.
