Chapter 1: Beginnings
This episode starts at the very beginning. Not the beginning of my story—the beginning of the human nervous system. Which is where the trouble starts.
Before a human being can be curious, they have to feel safe. That is not a slogan, and it is not self-help. It is closer to a law of human nature—and every argument in this series depends on it being true.
Abraham Maslow saw it plainly. His hierarchy of needs places the most elemental needs at the base—food, water, warmth, rest—and just above them, safety. Only when those foundations hold can a person climb toward belonging, esteem, and what Maslow called self-actualization. The hierarchy has been critiqued and refined over the decades, but its core insight has held. Before we can be wise, generous, curious, or creative, we need to feel safe. Safety is the precondition for everything else that makes us human.
This is not a metaphorical claim. It is a claim about the architecture of the human nervous system. The amygdala—the small, almond-shaped structure that is the brain’s primary threat-detection system—responds to perceived danger faster than the conscious mind can process information. It generates the fight-or-flight response before the prefrontal cortex has had time to evaluate whether the threat is even real.
This is adaptive. In the environment in which human beings evolved, the cost of a false alarm was trivial compared to the cost of missing a real one. Better to run from a shadow that turns out to be a branch than to ignore a shadow that turns out to be a predator. We are the descendants of the ones who ran.
The problem is that this architecture was designed for physical threats, and we live in a world of social and cognitive threats for which it is poorly suited. The amygdala cannot reliably distinguish between a physical threat to your body and a social threat to your group identity—and the political economy of manufactured certainty exploits that fact.
When political messaging frames LGBTQ people as threats to children, or immigrants as threats to the nation, or secular education as a threat to faith, it is activating a threat-detection system that evolved for lions, not for policy disagreements. The response is the same one a lion would trigger: elevated heart rate, narrowed attention, reduced capacity for complex reasoning, heightened hostility to the out-group.
The neuroscientist Joseph LeDoux, who has spent his career studying fear, makes the key point: the threat-response systems that produce fear are not infallible. They are reliably manipulable—as every political strategist who has ever run a fear-based campaign has understood. The question is whether we can, through conscious effort, interrupt the automatic threat response long enough to evaluate whether the perceived threat corresponds to anything real. That is supposed to be hard. But it is not impossible—and it is not optional, if we are to govern ourselves by evidence rather than fear.
The mechanism, in plain terms, is this. When we examine a problem through the lens of curiosity, we route it through our prefrontal cortex instead of our amygdala. Uncertainty stops being a threat to flee. It becomes a guiderail—the very thing that makes good decision-making possible.
And here is the practical implication. Most of the people who support policies that harm LGBTQ youth, or restrict teaching about racial history, or impose religious frameworks on secular governance, are not primarily motivated by malice.
They are motivated by fear—genuinely experienced, neurologically real fear, deliberately activated by political messaging built to exploit it. That does not excuse it; fear-based governance causes the same harm whether the fear is sincere or manufactured. But it changes the strategy: not primarily confronting bad faith, but patiently demonstrating that the perceived threat is not real. That is the only approach that produces durable change rather than the pendulum swings of fear-driven politics.
But here is the hopeful half of the same biology. The same architecture that produces the craving for certainty also produces the capacity to examine that craving—to notice the manufactured character of the certainty being offered, to ask for the evidence. This recursive capacity—the capacity to think about thinking—is what distinguishes the human animal from other primates more than any specific cognitive content.
The philosopher Daniel Dennett called one piece of it “the intentional stance”: the capacity to model other minds, to understand behavior in terms of beliefs and desires rather than mere physical cause and effect. It is what makes it possible for a parent to receive a child’s first-person report of their gender identity as evidence rather than dismissing it as confusion—and for a voter to evaluate a political claim rather than simply registering it as a threat signal. Democracy assumes citizens can do exactly that: not that they have technical expertise in every question, only that they can tell the difference between an argument grounded in evidence and one that relies on authority or manufactured certainty.
And the whole point of manufactured certainty is to keep ordinary citizens from doing exactly that.
The strategy is straightforward. Flood the information environment so no one knows what to believe. Attack the credibility of the universities, the newsrooms, the regulators that do the sifting on a citizen’s behalf. Reward people who sound certain. Punish people who admit doubt. Done well enough, over enough years, you produce an electorate that no longer asks for evidence—because asking has stopped feeling like a virtue. I’m calling the resistance to all of this Scientific Rebellion. Not because it requires scientific expertise—it does not. But because the scientific method is the best model we have for what self-government requires: putting your preferred conclusion second, and the evidence first.
The need to resolve uncertainty does not only shape how we survive. It shapes how we form groups and construct our identities.
Henri Tajfel and John Turner’s work in the 1970s on social identity theory demonstrated that humans will form in-group attachments based on even trivially arbitrary distinctions—the flip of a coin, the color of a dot. Once a group exists, members immediately favor the in-group and disparage the out-group, even when the groups were created by chance. Tribalism, it turns out, is not primarily a product of conflict over resources. It is a product of the need to know who you are and where you stand. The lines we draw between people convert the terrifying openness of an uncertain world into a legible map. The cost of that map is borne by the people who don’t fit neatly onto it.
And this is not a character flaw. The need for certainty is not a moral failing—it is evolution. The person who builds a wall between themselves and the unfamiliar is, at some level, frightened. Understanding that does not make the wall acceptable. But it makes it comprehensible, in ways that matter for the project of dismantling it.
The social psychologist Arie Kruglanski has spent decades studying what he calls the “need for cognitive closure”—the desire for a definite answer on a topic, any answer, over continued ambiguity. His research shows that this need intensifies under stress, fatigue, and threat. Under those conditions, people become more authoritarian in their thinking, more hostile to information that complicates their certainties, more likely to defer to strong leaders who project confidence.
The cocktail that intensifies the need for closure—economic anxiety, demographic change, cultural disruption, a media environment that saturates the senses with threat—describes, with uncomfortable precision, the America of the last decade. We are a nation that has been made to feel uncertain. And certainty is being sold to us, from every direction.
And like most addictions, this one has pushers. Kingpins who profit while everyone else in the equation loses. The kingpins today are the political organizations behind massive, well-funded campaigns to instill fear and doubt—about trans kids, the climate crisis, vaccines, women’s bodily autonomy, the true history of Black and Indigenous Americans. Naming them matters. So does naming who pays.
This is not new. The manufacture and sale of certainty has a history essential to understanding our present moment.
Consider the eugenics movement of the late nineteenth and early twentieth centuries. Eugenics—the so-called science of improving human genetic stock through selective breeding and the sterilization of those deemed unfit—was not a fringe position. It was mainstream science in the United States and Europe from the 1880s through the 1930s, taught in universities, endorsed by progressive politicians, including Theodore Roosevelt. And it produced, in this country, the forced sterilization of roughly sixty-five thousand people deemed genetically inferior—disproportionately poor, disabled, institutionalized, and people of color.
The manufactured certainty of eugenics was not religious. It was scientific in name—dressed in the language of science while lacking the substance. The research was selectively compiled. The conclusions were predetermined. The result was a system that used the authority of science to authorize atrocity.
I tell this story not to discredit science—its internal mechanisms eventually caught up with eugenics and rejected it—but to show that the production of false certainty is not limited to religion. Any framework for determining what counts as knowledge can be corrupted when it is placed in the service of power rather than truth. The difference is the correction mechanism—science has one, and it eventually worked. But sixty-five thousand people had already been irreversibly harmed.
The manufactured certainty of the anti-trans movement follows the same pattern as eugenics—pseudo-scientific claims about the brain, about childhood development, about the effects of gender-affirming care, built on selective citation and predetermined conclusions and scientific-sounding language in service of a political agenda. History has a verdict on the people who did the corrupted science and the people who did the honest science. It will have a verdict on the people doing each version now.
There is a second historical parallel worth naming—the campaign against Galileo. His findings did not merely contradict a theory. They contradicted a system of authority that had organized itself around the claim to know. The lesson is not that the Church was uniquely malign—many institutions, secular and religious alike, have suppressed evidence that threatened their authority. The lesson is about the relationship between evidence and power. Evidence that contradicts those in power is not experienced as information to be incorporated. It is experienced as a threat to be neutralized.
This is why the suppression of gender-affirming care, the banning of books about Black history, and the denial of climate science are not separate stories. They are three instances of the same relationship. The Galileo story ended with the Church eventually acknowledging what the evidence showed. It took more than three hundred years. We do not have three hundred years.
My training gives me no other way to think about this than in concrete terms. There is a stone railroad bridge near my home in Dexter, Michigan, that has carried the load for more than a hundred and thirty years. It was designed by Frederick Pelham, the first African American to earn a civil engineering degree from the University of Michigan—the same college that, a century later, trained me. His name is not on the plaque. A bridge carries the load or it does not, and no amount of certainty about who is permitted to be an engineer changes the arithmetic of the arch.
So the question is not whether we will seek certainty. We will—it is as inevitable as hunger. The question is whether the certainty we find will be proportioned to the evidence, or manufactured and sold by those who stand to benefit from our fear. And because the threat response operates faster than reason, the Scientific Rebellion I am proposing cannot only be an argument. It has to be a story. It has to be a community. It has to provide what the weaponized certainty provides—belonging, identity, safety in numbers—but grounded in something true.
And here is something the manufactured certainty has gotten right that we too often get wrong. People are emotional, and that is not a defect to be corrected. The neuroscientist Antonio Damasio has shown that people with damage to the emotional centers of the brain cannot make good decisions—not because they lack information, but because they lack the emotional signals that tell them which outcomes matter. Emotion and reason are partners, not enemies.
The problem is not that people feel things. It is that their emotions are being engaged dishonestly—by manufactured threats designed not to inform judgment but to override it. The solution is not to tell people to stop feeling things. It is to give them something true to feel.
Carl Sagan understood this, and it’s why Cosmos exists. It’s why the most effective science communication has always been about revealing wonder. Wonder is the emotional signal that awakens curiosity—the feeling of not knowing, experienced as a gift rather than a threat. I believe it is teachable, contagious, and the only antidote to the manufactured certainty tearing this democracy apart.
There is also a structural answer that gets left out of conversations about epistemic crisis. The anxiety and sense of threat that produce the need for manufactured certainty are not simply natural. They are produced, in significant part, by specific economic choices. When workers lose economic security and have no safety net, their need for cognitive closure intensifies. Defending evidence-based democracy is not separable from economic justice. I came to that slowly—through the uncomfortable recognition that my own relative security has given me a luxury in my relationship to uncertainty. I can afford to sit with open questions. Many people cannot.
The social sciences have a concept I have found useful here—“epistemic justice,” developed by the philosopher Miranda Fricker. It is about who gets taken seriously as a knower, and whether people have the concepts they need to make sense of their own experience. Transgender people are routinely denied both: dismissed as knowers of their own experience, and—where the book bans succeed—stripped of the language they need to understand it. That is what a ban on books about transgender lives is: not the protection of children, but a form of violence against their capacity to know themselves and be known.
What the Scientific Rebellion builds in response—in our schools, our legislatures, our economy—comes later in this series. The diagnosis has to come first.
Change is possible. This is the thing I hold onto when the news is worst and my son’s face is in my mind. But “possible” needs unpacking, because the history of progress is not the history of inevitable progress. It is the history of contingent progress—progress that happened because particular people made deliberate choices that could have gone otherwise.
The history of this country is, in part, the history of manufactured certainties being dismantled. The certainty that women could not vote. That Black Americans were not full citizens. That gay and lesbian people were mentally ill. That disabled people had nothing to contribute. Each of these was once as solid as bedrock to the people who held it. Each of them fell—because people decided to rebel, to insist, against the weight of institutional authority, that the evidence of shared humanity mattered more than the manufacture of comfortable hierarchy.
We are at another such moment now. Meeting it begins with a set of ordinary tools—curiosity, evidence, critical thinking. They are not complicated, and you already own them. They ask only one thing of you: the willingness to use them. That is where we go next.
