“People love conspiracy theories.” – Neil Armstrong

I used to find a lot of humor in conspiracy theorists. Nazi on the dark side of the moon. Flat earthers. People who somehow believed that a half-million government employees managed to keep a fake moon landing a secret for fifty years. And the beat goes on.

It’s not so funny anymore.

The assassination of President John F. Kennedy was hardly the first incident to inspire conspiracy theories, but it is the modern archetype. Within years, the theories had multiplied. The CIA did it, furious at Kennedy’s handling of the Bay of Pigs. The Mafia ordered it, settling old scores. Lyndon Johnson orchestrated it, hungry for power. To this day, public polls consistently show that a majority of Americans believed Oswald did not act alone.

The Kennedy assassination industrialized conspiracy theories, proving that no settled conclusion, however well-evidenced, is immune to the gravitational pull of doubt, drama, and distrust. It set the template for everything we see today in an increasingly polarized society.

A Gallery of Infamy

Several years ago, I was involved in a senior leader engagement with a prominent professional football coach when he shared his belief that the September 11 attacks had, in fact, been part of an orchestrated government conspiracy. He honestly believed that the destruction of World Trade Center was part of some insider trading scheme in airline stocks and the Pentagon attack has been an elaborate, Hollywood-style illusion. “You have to think critically about it” he told us.

The late twentieth and early twenty-first centuries have produced a remarkable catalogue of theories that have burrowed into mainstream consciousness with surprising tenacity. A surprising number of people – a figure that seems to grow by the day – believe that NASA’s Apollo 11 mission in 1969 was staged on a film set, possibly directed by Stanley Kubrick, to win the Space Race against the Soviet Union. I actually use their arguments – waving flags, inconsistent shadows, and the Van Allen radiation belts – to open discussions on critical thinking. In reality, the evidence for the landings — including retroreflectors still used by scientists today — is overwhelming, and the Soviets, who had every incentive to expose a fraud, never disputed it.

The QAnon movement, which metastasized from online fringe into a genuine political force, allege that a secret cabal of Satan-worshipping pedophiles — including politicians and celebrities — controlled governments worldwide and were being secretly opposed by a military insider called “Q.” Anti-vaccination theories have linked vaccines to autism, microchip implantation, and population control. The consequences have been measurably deadly, contributing to the resurgence of diseases like measles in countries where they had been all but eradicated.

What unites these theories is not their content but their architecture: a hidden, powerful enemy; suppressed truth; and a heroic community of brave souls who have “done their research.”

The Psychology of Belief

Wrapping your head around the proliferation of conspiracy theories requires setting those theories aside and exploring the mindset that embraces them. Psychologists have spent decades mapping this human terrain, and their findings are equal parts illuminating, disturbing, and humbling.

1. The Need for Cognitive Closure

The foundational driver of conspiracy theories is the need for cognitive closure. People tend to be uncomfortable with uncertainty. So, when a catastrophic event like a presidential assassination or a global pandemic defies an easy explanation, the mind reaches for narratives that restore some semblance of order, even if that order is an illusion. There’s no way a mediocre marksman could manage a shot from that distance; a vast conspiracy feels proportionate to the scale of the loss.

2. Pattern Recognition

Pattern recognition, one of the brain’s most powerful cognitive tools, can sometimes be a liability. We’re wired to identify connections; it’s fundamental to our survival instinct. But this same instinct generates apophenia, the perception of meaningful patterns in random data. That football coach wasn’t a stupid man, just someone whose pattern-recognition had misfired in an environment saturated with information.

3. Social Identity and Belonging

Social identity and belonging play an equally significant role. Research has shown that belief in conspiracy theories is strongly associated with feelings of social exclusion and powerlessness. Possessing insider knowledge of a “hidden truth” comes with status and purpose within a community of fellow believers. In a divided society, this is a powerful emotional driver.

4. Distrust in Institutions

Distrust in institutions, which is not always irrational, factors into the equation. Governments lie. Corporations conceal harm. Intelligence agencies run illegal programs. When institutions breach the public trust, they create fertile ground for believing that something is concealed. A logical overstep, perhaps, but an understandable one.

The internet and social media have transformed conspiracy theories from local phenomena into global movements, giving a pronounced voice to what was once a fringe element of society. Together, they feed people an algorithmically curated diet of confirming information, provide a psychological safe space where others who share those beliefs can organize, and insulate them from challenge.

Critical Thinking in a Divided World

Unsurprisingly, it was a random social media post that inspired me to dig a little deeper into the subject matter. The post in question was a meme, as they often are, and included more disinformation than actual information. I pondered pointing out the logic fallacies – and mistakes – in the post, but doing so is often counterproductive and typically deepens the sense of marginalization the source already feels.

The most effective approach begins with epistemic humility. Acknowledge that institutions have failed, that the powerful do sometimes lie, and skepticism has legitimate roots. This is not caving, but the opening salvo of genuine dialogue. A conversation that begins with “you’re not entirely wrong” does more to open doors than condescension.

From there, focus on process rather than conclusions. For example, ask, “How do we know what we know?” or “What would change your mind?” Conspiracy thinking is fueled by unfalsifiability, the idea that every piece of counter-evidence is proof of a cover-up. Helping someone identify that circularity is more powerful than presenting facts, which can and will be dismissed.

Finally, inoculation theory serves as a powerful and promising tool: exposing people to weakened forms of misinformation — along with clear explanations of the manipulation involved — before they encounter the full version. In this case, we’re pre-bunking rather than debunking the conspiracy theory.

To this day, I keep an autographed football from that coach hanging in my office. But it’s not a trophy. It’s a conversation starter. Critical thinking cannot flourish in a vacuum; it needs credible sources to trust when the analysis is complete. In a world where reality itself has become contested territory, the capacity to reason carefully, contend with uncertainty, and engage through difference may be the most vital civic skills of our time.

 

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Steve Leonard is a former senior military strategist and the creative force behind the defense microblog, Doctrine Man!!. A career writer and speaker with a passion for developing and mentoring the next generation of thought leaders, he is a co-founder and emeritus board member of the Military Writers Guild; the co-founder of the national security blog, Divergent Options; a member of the editorial review board of the Arthur D. Simons Center’s Interagency Journal; a member of the editorial advisory panel of Military Strategy Magazine; and an emeritus senior fellow at the Modern War Institute at West Point. He is the author, co-author, or editor of several books and is a prolific military cartoonist.