Why the Internet Doesn't Make Us More Rational: A Biological Perspective

Introduction and Framing

This session addresses a deceptively simple question: why do humans, despite having access to virtually unlimited information through the internet, fail to form more objective views of the world? The host — a biologist — frames this as a biological question rather than a philosophical or sociological one, arguing that understanding the brain as a biological system is essential for evaluating the information we encounter daily.

A central observation is that the internet was supposed to change everything — and in some ways it did, enabling remote work, flexible schedules, and cross-continental collaboration. Yet it has not fundamentally improved humanity's ability to arrive at objective truth. The same hopes were once placed on the printing press, universal literacy, public libraries, and mass education. None of these eliminated widespread belief in falsehoods, conspiracy theories, or propaganda. The reason is straightforward: all of these are tools, and tools cannot change our underlying biological nature. The brain that processes information from the internet is the same brain shaped by hundreds of millions of years of evolution.

Free Will and the Frontal Cortex

A brief but substantive digression addresses free will. The host's position is that free will does exist, but is constrained by genetics, upbringing, and circumstance. The frontal cortex — the rational, reflective part of the brain — can recognize the pull of the limbic system (the emotional, reward-seeking system) and allow us to restructure our environment to reduce its influence. True agency is not about becoming a fundamentally different person through sheer willpower, but about using reason to design conditions that minimize self-destructive impulses — for example, not keeping junk food at home if you can't resist it.

The Evolutionary Roots of Cognitive Bias

The core biological argument is that the mechanisms governing how our brains process information evolved under conditions of extreme survival pressure. For hundreds of millions of years, the cost of a cognitive error was often death. This produced deep, nearly irremovable mental shortcuts and biases, because individuals who lacked them did not survive to reproduce. These mechanisms are:

Powerful — selected for under life-or-death conditions
Automatic — they operate whether we want them to or not
Inflexible — they respond to modern, complex signals as if those signals were simple, immediate threats or opportunities from the ancestral environment

Why These Mechanisms Now Work Against Us

First: the weakening of natural selection. Modern civilization — through medicine, social safety nets, and humanitarian values — allows individuals to survive and reproduce who would not have done so in earlier environments. Meanwhile, highly rational, deliberate people often delay reproduction or have fewer children. The result is that natural selection no longer consistently filters out maladaptive cognitive tendencies. This is stated as an objective observation, not a moral judgment.

Second: the radical increase in environmental complexity. In the ancestral environment, stimuli were direct and consequences immediate: you see a predator, you flee; you eat bad food, you get sick right away. Today, the connection between actions and consequences is massively delayed and obscured. Taking out a high-interest loan to buy a phone produces immediate pleasure but financial damage months or years later. Voting for a political party may not reveal its consequences for a decade. Because the brain cannot easily learn from delayed feedback, it continues to respond to complex modern stimuli with simple, emotionally-driven reactions — precisely the vulnerability that propagandists, demagogues, and manipulative media exploit.

Propaganda, Manipulation, and the Bernays Legacy

Certain actors — radical political movements, skilled propagandists — understand these biological vulnerabilities intuitively or explicitly. Edward Bernays, the father of modern public relations and propaganda, systematically applied knowledge of human psychological weaknesses to shape mass behavior. Goebbels carefully studied Bernays's work to run anti-Jewish campaigns — a deeply ironic fact, since Bernays was himself Jewish. Bernays reportedly acknowledged this with discomfort but accepted it as inevitable: once a tool exists, it can fall into the hands of people with malicious intentions.

Skilled manipulators package their messages so that the brain perceives them as far more relevant and credible than messages that would actually help people form an accurate picture of reality. As a result, people react strongly to manipulated content and ignore information that would give them more objective understanding.

Why Ancient Peoples Invented Gods: A Biological Explanation

Ancient peoples lacked knowledge of natural laws. When they tried to explain floods, fires, droughts, or seasonal shifts, they used the only conceptual framework available: human social dynamics. Across every culture — Scandinavian, Greek, Roman, Slavic, Aboriginal Australian — the gods have rich, complicated personal lives filled with love, betrayal, jealousy, and revenge. This is not coincidental. Our ancestors projected what they knew — how human communities operate — onto the forces governing nature, because inventing genuinely new explanatory frameworks requires a prior accumulation of knowledge they did not yet possess.

But there is a deeper biological reason why humans had to invent explanations rather than simply accept ignorance. The brain is fundamentally intolerant of unexplained causality. If we cannot identify the cause of something, we cannot predict what will happen next, and without prediction, we cannot minimize risk or maximize benefit. This is not a philosophical preference — it is a hardwired survival mechanism. The brain generates causal explanations automatically, rapidly, and largely unconsciously.

Infants as Evidence

Infant development research illustrates how deep and automatic this causal modeling is:

Infants who cannot yet speak will stare significantly longer at an object that violates their expectations than at one that behaves predictably — demonstrating that causal modeling begins within weeks of birth, long before language or conscious reasoning.
Infants refuse to crawl across a transparent glass surface even though it is structurally sound, because they already apply physical rules to their environment without conscious instruction.
These behaviors arise from faster, deeper, automatic neural systems, not from the frontal cortex.

Curiosity as a Biological Drive

This early learning is powered by dopamine. The anticipation of new discovery triggers dopamine release, making curiosity feel rewarding. This is why infants compulsively experiment — pulling tablecloths, touching fires, knocking over aquariums. It is not misbehavior; it is the brain's designed strategy for rapidly accumulating causal knowledge, because the cost of not learning fast enough was death.

Why Curiosity Fades and World-Models Harden

As humans mature, explosive curiosity diminishes. This is evolutionarily rational in a stable environment: in the ancestral world, the physical and social environment changed very little across generations. It therefore made sense to build a world-model rapidly in childhood, lock it in and defend it thereafter, and conserve energy that would otherwise go to constant re-learning. Natural selection therefore favored not only mechanisms that build world-models, but also mechanisms that protect those models from disruption.

Neoteny and the Persistence of Human Curiosity

An apparent contradiction arises: if the brain actively defends its world-model, how does learning ever occur? The biological answer involves neoteny — a phenomenon in which an organism retains juvenile characteristics into adulthood. Humans are uniquely successful partly because we have retained, into adulthood, the juvenile curiosity that in most other animals disappears after early life. Kittens play obsessively; adult cats largely stop. The same pattern holds across the animal kingdom: play and curiosity are the young animal's mechanism for building its world-model, powered by an active limbic system and dopamine.

In adulthood, a different evolutionary program takes over: reproduce and defend resources. The frontal cortex becomes more dominant — though it does not fully develop until around age 21, which is why adolescent brains are genuinely structurally different from adult brains. This explains a consistent historical pattern: it is always young people who most passionately adopt and advocate for new ideologies, whether communism, nihilism, environmentalism, or social justice movements. Adolescents are still actively constructing their world-models and are neurologically primed to absorb and champion new frameworks.

Key Cognitive Biases That Protect the World-Model

The brain's world-model defense system produces a suite of well-documented cognitive biases:

1. Familiarity Equals Truth

Information encountered repeatedly begins to feel true, or at least normal, regardless of its actual accuracy. The ancient logic: if I passed that bush a hundred times and nothing attacked me, it is safe. Hearing something repeatedly — even from manipulative sources — gradually makes it feel credible. A political opponent repeatedly called corrupt will begin to generate a nagging sense of "maybe there's something to it" even in people who know better. There is no immunity to this effect — it operates automatically, requiring constant conscious vigilance.

2. Selective Perception (Confirmation Bias)

Information confirming our existing world-model is processed more easily, memorized faster, and recalled more readily. Information that contradicts it is processed with friction. Propagandists exploit this by framing messages as confirmations of things the audience already believes.

3. Disconfirmation Bias

Contradicting information is automatically perceived as less credible even before its content is evaluated. A flat-earther shown photographs of Earth from space will immediately suspect Photoshopping — not because of specific evidence but because accepting the images would destroy the existing world-model. Losing a world-model is psychologically terrifying: it means losing one's instrument for predicting the future.

4. Cherry-Picking

As a downstream consequence of the above biases, people actively select confirming information from the available stream and discard the rest. The brain does this automatically to protect cognitive coherence.

5. The Desirability Bias

We more readily accept information that makes us feel good — producing pride, validation, or belonging. The brain equates pleasant feelings with beneficial stimuli, a heuristic that served well ancestrally but causes serious problems today. Messages invoking patriotism, group solidarity, or personal pride exploit this bias directly. Flattery is the classic example: a person who compliments you first is far more persuasive than one who immediately challenges you.

The Brain Does Not Treat All Sources of Information Equally

Our brains are deeply sensitive to the source of information, and not in the direction of preferring verified, authoritative sources. Information from people we respect — a beloved doctor, a charismatic YouTuber, a revered elder — is automatically processed as more credible. This was adaptive: in the ancestral environment, the experienced elder's knowledge about which berries were poisonous was far more reliable than a random stranger's claim.

The same mechanism operates with beloved public figures. A kindly family doctor who has always represented warmth and competence is neurologically difficult to evaluate critically if he suddenly begins expressing reprehensible views — the pre-existing emotional association overrides rational assessment.

The Authority of the Majority

A second equally powerful source heuristic is social consensus. If the majority of people around you believe something and act accordingly, that belief carries a powerful built-in credibility boost — not because of its content, but because surviving majorities historically tended to have functional knowledge. Going against group beliefs risked ostracism, and ostracism in a small tribal group meant death. The brain therefore generates a strong aversive response to publicly contradicting group consensus.

This means that a fake news story circulating in five of your social group chats carries far more psychological weight than a carefully sourced fact-checking article sent by an acquaintance you're arguing with online. The fake story arrives backed by social consensus and repeated exposure; the fact-check arrives from an adversarial source attacking your world-model.

Cognitive Dissonance and Social Conformity

When the majority holds views conflicting with one's own moral intuitions, the result is cognitive dissonance — a deeply uncomfortable state. The brain works urgently to resolve this dissonance, typically not by rejecting the majority's position but by finding justifications for it. Two classic mechanisms:

Blaming the victim: when injustice is obvious but challenging it feels socially dangerous, the brain attributes responsibility to the victim, dissolving the moral tension.
Dehumanization: constructing a strongly negative image of the target of aggression makes it easier to withhold empathy.

These are not deliberate moral failures — they are the brain's automatic defense against the psychological cost of social isolation. Even committed introverts are profoundly dependent on social approval at a neurological level.

The Amplifying Factors: Time and Developmental Timing

Two additional factors intensify these effects:

Duration of exposure matters enormously. Encountering false or distorted information twice is very different from encountering it 122 times across multiple channels. Quantity transitions into quality: prolonged immersion in a distorted information environment causes that distortion to sink deeper and deeper into one's world-model.
Developmental timing is critical. Research on children who were in primary school during the Nazi era shows they retained significantly higher levels of antisemitism throughout their entire lives compared to people who encountered the same propaganda as adults. Indoctrination during the active world-model-building phase of childhood leaves a far deeper imprint.

Why Schools Fail to Compete With Peer Networks

If adolescents are so good at absorbing new ideas, why do they so often absorb nonsense from their social environment rather than accurate knowledge from school curricula? The answer is blunt: in ancestral environments, there were no textbooks. We did not evolve neurological reward mechanisms for absorbing information from written texts presented by an authority figure in a classroom. We did evolve powerful mechanisms for absorbing information from people we trust emotionally — elders, respected peers, group leaders. Learning from a textbook requires conscious effort and yields little immediate emotional reward. Learning from a respected social figure or from ambient peer-group beliefs happens automatically, because those are the channels our brains were built to prioritize.

This also explains the importance of the beloved teacher. A gifted teacher functions as a significant adult and influencer: the psychological mechanism of receiving knowledge from an authoritative, hierarchically positioned figure is precisely how human learning is designed to work. Educational systems that attempt to dismantle teacher authority destroy the very transmission mechanism that makes formal education meaningful.

The Failure of Modern Education Systems

Child-Led Learning

Western progressive education — built on the premise that if pressure is removed, children will naturally pursue what interests them — has produced collapsing PISA test scores across Europe, particularly in Scandinavian countries once celebrated as educational models. The biological explanation is straightforward: most people are not naturally intensely curious about any particular thing. Evolution did not select for passionate intellectual focus because moderate, broad-spectrum interest was sufficient for survival. Without appropriate guidance and graduated challenge, children predictably gravitate toward low-effort, immediate-reward activities, because that is what their limbic systems are optimized to pursue.

The Gamification Trap

When learning is made to look like play, children engage — but the moment the task requires genuine cognitive effort, the game-like quality disappears and educational value is lost. Gamification works only while the difficulty remains trivial.

The Result

Children exiting structureless systems often have no coherent, stable world-model, leaving them easily influenced by whoever presents information most compellingly. The education system inadvertently serves the interests of propagandists by ensuring the population lacks conceptual scaffolding to resist manipulation. The host notes, however, that Soviet-era schooling — which applied more structure and pressure — still produced generations susceptible to folk medicine and mysticism, underscoring that the problem has no simple solution.

The Case for Teaching Critical Thinking, Logic, and Source Evaluation

These subjects should be reinstated in schools, alongside formal logic — present in pre-revolutionary Russian education but subsequently removed. Three specific competencies are essential:

Critical thinking — evaluating the strength of an argument rather than simply its emotional appeal.
Source evaluation — understanding what makes a source credible and how to assess reliability.
Formal logic — recognition of logical fallacies, including subtle ones propagandists use deliberately, such as false dichotomy and more sophisticated variants.

These directly strengthen the frontal cortex's capacity to override limbic reactions, enabling people to notice manipulation — whether from external propagandists or from their own brain's self-protective distortions.

Simply introducing these subjects is insufficient, however. University philosophy and bioethics courses exist but are routinely crammed the night before exams, producing no lasting knowledge. How these subjects are taught matters as much as whether they are taught — they must be genuinely engaging and connected to real-world application, not delivered as abstract material severed from lived experience.

The Consequences: How People Resist Reality

These mechanisms collectively explain why people deny obvious contradictions to their world-models. A person ignores clear symptoms of cancer because accepting them would mean confronting the collapse of their self-image as healthy — until symptoms become too severe to ignore, often too late. Citizens living through Stalinist repression continued explaining away arrests as "mistakes" rather than accepting that they lived among mass murderers, because the psychological cost of accepting reality was too high.

Connected to this is the optimism bias: the brain systematically underestimates risks and overestimates positive outcomes, because a clear-eyed probabilistic assessment of most human endeavors would be paralyzing. This bias is adaptive in normal circumstances but catastrophic when danger is real and growing. At the Hitler Bunker museum in Berlin, photographs and statistics document that even after the pogroms of Kristallnacht made danger unmistakable, the majority of Jewish people stayed — not because they lacked intelligence or information, but because their brains were protecting them from the unbearable cognitive cost of accepting reality.

The film The Truman Show is recommended as an artistic illustration of how devastating and disorienting it is when a person's entire world-model is suddenly revealed to be false.

The Third Problem: Most People Don't Actually Want an Objective Picture of the World

The host argues directly that the majority of people are simply not interested in objective accuracy — not because they are malicious or stupid, but because objectivity does not reward them. For someone whose genuine priorities are family, physical comfort, social connection, and daily enjoyment, investing effort in verifying contested claims about distant political realities produces no immediate benefit and considerable psychological discomfort.

People who pursue fact-checking and evidential accuracy tend to do so because the process itself is rewarding to them — their brain circuitry makes accuracy-seeking intrinsically satisfying. For people who lack this wiring, the entire enterprise feels like abstract, joyless effort with no payoff. This is not a moral judgment; it is a description of the distribution of cognitive preferences in a population.

Fact-checking is a deeply polygenic trait — it cannot be traced to a single gene or brain region. People drawn to it tend to be high in precision-seeking and risk-aversion, constitutionally uncomfortable with uncertainty and strongly motivated to confirm correctness before committing to a belief. This is distinct from general intelligence, and for the majority, evidence-verification yields no intrinsic reward — which is why it cannot be universalized through education alone.

The Internet Makes Everything Worse

The internet has dramatically amplified all of the above problems rather than solved them. Historically, ordinary people had very limited exposure to news and information. Before mass media, only elites had access to events beyond their immediate village. Today, it requires deliberate effort to avoid the information flood. We scroll news feeds while waiting for a bus. Political content seeps into social groups, messaging apps, and entertainment platforms. Boredom — which once created mental space — is now filled within seconds.

The result is that people are subjected to far more intense, far more continuous information (and misinformation) exposure than at any prior point in human history. The biological reactions to that information remain exactly the same as they always were. But the volume, velocity, and sophistication of manipulation have all increased enormously. Propagandists who once could only reach local populations can now reach billions, with messages precision-engineered to exploit exactly the cognitive vulnerabilities described above.

Several compounding reasons explain why the internet reinforces delusion rather than correcting it:

Confirmation is the goal, not accuracy. When people search for information, they are typically looking to confirm what they already believe. A person convinced that vaccines cause autism will phrase their search accordingly, and results will dutifully return confirming content.
Source credibility is irrelevant to most users. Only scientists and professional fact-checkers genuinely attend to sourcing methodology. For the vast majority, emotionally compelling presentation is far more persuasive than methodological rigor.
Conspiracy theories and misinformation are engineered to exploit cognitive vulnerabilities. They provide simple answers to complex questions, identify clear villains, and press exactly the emotional buttons that the brain has been optimized to respond to. Objective accounts are inherently complex, filled with qualifications, and demand sustained cognitive effort that yields no immediate reward.
Most people lack basic information literacy. They formulate search queries with their conclusion built into the question, and results confirm it.

Once a false belief is confirmed online, every subsequent encounter with confirming information reinforces the world-model further. The architecture of the internet — with its abundance of content catering to every conceivable position — ensures that no matter how mistaken a person's beliefs are, they will never have difficulty finding further confirmation.

Emotions as the Foundation of All Cognition

The host rejects the idea that humans process information like computers loading data. Biological computers run on emotional mechanisms, not silicon chips. Every piece of information is evaluated through an emotional lens. While modern civilization has developed a cult of facts, treating them as the primary driver of thought, this belief is an illusion. Facts are a historically recent invention; our brains still operate by the same emotional rules they used in the ancestral environment.

The practical consequence: if we want a world built on objective facts, we must stop pretending humans are rational processors and start designing information delivery to match how the brain actually works — not battering people with evidence and expecting them to update their beliefs accordingly.

The art of emotionally resonant communication has been largely captured by propagandists, populists, and short-term political operators. Those who wish to conceal the truth have a powerful incentive to master persuasion. Meanwhile, well-intentioned advocates for accuracy continue to insist that fact-checking and evidence are sufficient — a position rooted in a profound misunderstanding of human psychology.

The Danger of Political Disengagement

Deliberate cultivation of political apathy — through cynicism ("politicians are all crooks") or manufactured indifference — is historically among the most dangerous conditions a society can enter. There are no shortage of examples of uninvolved populations, having decided that politics was irrelevant to their lives, finding themselves trapped in catastrophic consequences they had failed to see coming.

Practical Strategies

The "Shield of Perseus" — How to Consume Dangerous Information Safely

The host draws on Greek mythology for a practical recommendation. Perseus defeated Medusa not by looking at her directly — which would have turned him to stone — but by viewing her reflection in his shield, neutralizing her power without exposing himself.

Applied to media consumption: avoid direct immersion in heavily emotionally engineered content, particularly propaganda from sources known to be manipulative. Even people who understand propaganda mechanisms intellectually are not immune to their emotional effects — the limbic system does not check credentials before responding to fear, outrage, or tribal solidarity signals.

Practical strategies include:

Reading summaries and digests rather than consuming raw propaganda directly.
Reserving direct engagement with the most emotionally charged material for specific, controlled circumstances — not routine consumption.
Being especially cautious with content that is personally relevant — the more something touches your identity, community, or loved ones, the more vulnerable you are to its emotional manipulation, regardless of analytical sophistication.

Can People Be Persuaded Back to Accurate Beliefs?

Yes, but the means matter enormously. Propaganda works because it employs emotionally effective techniques: dehumanization of opponents, clear villain narratives, emotionally resonant storytelling, exploitation of in-group loyalty. These techniques can theoretically be used to promote accurate, prosocial beliefs — but adopting the full toolkit of propagandistic manipulation in service of truth risks becoming the dragon one set out to slay.

Arnold Schwarzenegger's early-war address to Russian citizens exemplifies emotionally intelligent communication that stopped short of manipulation: he opened with genuine expressions of respect for Russian culture and a specific personal memory, positioned himself as an admirer speaking reluctantly rather than a critic attacking, and framed the war as a mistake rather than a moral catastrophe caused by irredeemably evil people. This approach — emotionally attentive without being dishonest — represents the available middle path.

Is Curiosity Recoverable in Adults?

Whether curiosity persists into adulthood is substantially genetically determined. Genuine lifelong scientists are a real type — people for whom intellectual exploration remains intrinsically rewarding throughout their lives. For those in whom curiosity has genuinely diminished, no single intervention will restore it. What is possible is creating environmental conditions that stimulate the relevant neural circuits — situations requiring modest exposure to novelty that activate dopaminergic reward pathways and gradually rebuild an appetite for new information. External environmental conditions are often more effective than internal resolve: falling in love with someone passionate about a subject, for instance, can motivate genuine engagement with material that would otherwise produce complete disinterest. Once even mild curiosity is reactivated, small discoveries trigger dopamine, which motivates further inquiry — the difficulty is initiating the cycle when starting motivation is low.

Will Scientifically Curious Parents Have Curious Children?

There is no single "interest in science" gene, and specific interests are far less genetically deterministic than general traits like IQ. Siblings raised in identical households regularly diverge sharply in their passions. Both parents carry genes from their own parents, are heterozygous across many relevant loci, and which combinations their children inherit cannot be predicted. The practical advice: parents can gently stimulate interest through exposure — podcasts, activities, conversations — without applying direct pressure. If a child shows no resonance, it may be more productive to identify and develop their actual strengths rather than forcing an interest that isn't taking root.

Conclusion: No Single Solution, But Cumulative Improvement Is Possible

There is no policy intervention, no educational reform, no technological tool that will resolve the mismatch between human cognitive architecture and the demands of a complex, fact-saturated modern world. The optimistic scenario — a citizenry of curious, critical, fact-checking individuals navigating the internet toward shared truth — is not biologically realistic for most people.

What is realistic is incremental improvement through multiple overlapping efforts: better-designed education in logic and critical thinking, emotionally intelligent communication of accurate information, cultivation of individual media hygiene practices, and honest acknowledgment that reducing the proportion of people vulnerable to manipulation — even modestly — constitutes a meaningful achievement. Changing the ratio matters, even when changing everyone is impossible.