Multiple Realities

It's tempting to think polarization is just people disagreeing harder about the same set of facts. The more uncomfortable version is that people increasingly disagree about what the facts are — unemployment numbers, who said what, whether a given policy worked. This isn't unique to one side of the aisle, and it isn't new. What's changed is the machinery that manufactures and reinforces it.

Conservatives and liberals, in brief

Before getting into why the two sides seem to inhabit different factual worlds, it helps to be clear about what they actually tend to disagree on. These are generalizations about coalitions, not descriptions of any individual — plenty of people mix and match — but political scientists find these clusters show up consistently in American survey data.

Dimension	Conservative tendency	Liberal tendency
Change vs. tradition	Favors preserving established institutions and social arrangements; change should be gradual and earn its case	Favors reforming institutions seen as unjust or outdated; change is often overdue rather than risky
Role of government	Skeptical of government's ability to solve problems well; prefers markets, local control, and personal responsibility	Sees government as a necessary tool to correct market failures and social inequities
Individual vs. collective	Emphasizes individual liberty, self-reliance, and personal accountability for outcomes	Emphasizes structural and social factors shaping outcomes, and collective responsibility to address them
Moral emphasis	Weighs loyalty, authority, and sanctity alongside care and fairness (Haidt's moral foundations)	Weighs care and fairness most heavily, with less emphasis on loyalty, authority, or sanctity
Economic policy	Lower taxes, less regulation, smaller safety net, growth through private enterprise	Progressive taxation, stronger regulation, larger safety net, growth through public investment
Social/cultural issues	Tends to favor traditional norms around family, religion, and national identity	Tends to favor expanding rights and recognition for groups historically excluded from those norms
View of institutions	More trusting of markets, military, and religious institutions; warier of media and federal bureaucracy	More trusting of scientific and academic institutions and federal agencies; warier of corporations and organized religion's role in policy

Neither coalition is fixed or monolithic — both have shifted substantially over the past century, and each contains real internal disagreement (libertarian vs. religious conservatives; progressive vs. centrist liberals, for instance). But the table above is roughly the shape of the divide that the rest of this piece is trying to explain — not just that the two sides disagree, but why they so often can't even agree on the underlying facts they're disagreeing about.

Why this happens

Motivated reasoning

People don't process political information the way they process neutral information. When a fact threatens a belief tied to identity, the brain works to explain it away rather than update on it. Studies on "identity-protective cognition" (Dan Kahan and others) find this effect is roughly symmetric across the political spectrum — it's not that one side is more rational, it's that everyone is more rational about facts that don't threaten their in-group.

Moral foundations, not just different opinions

Social psychologist Jonathan Haidt's research suggests conservatives and liberals don't just weigh the same values differently — they often start from different moral foundations altogether. Liberals tend to weight care and fairness most heavily; conservatives more often weight loyalty, authority, and sanctity alongside care and fairness. Two people can look at the same event and genuinely perceive different things as morally relevant, which shapes which facts feel important enough to notice.

Separate media ecosystems

Cable news, talk radio, and social algorithms have sorted audiences into largely separate information diets. This isn't symmetric in structure — different outlets have different business models and incentives — but the effect is symmetric in kind: each ecosystem has its own set of trusted sources, its own framing of the same events, and its own blind spots.

Elite cues

Most people don't independently verify claims about, say, economic data or foreign policy — they take cues from leaders and commentators they already trust. When elites on either side contest a factual claim, followers tend to sort into believing whichever version their trusted figures endorse, often before the underlying facts are even settled.

A related question: does death itself get processed differently?

A natural follow-on question: given how differently the two coalitions process threat, morality, and institutional trust, is there a settled finding that they also hold different attitudes toward death specifically? The question tends to surface around moments like Iowa Sen. Joni Ernst's May 2025 town hall reply — when a constituent warned that proposed Medicaid cuts would cause deaths, she responded, "Well, we're all going to die." That exchange is a data point about political rhetoric, not about psychology; it doesn't itself tell us whether conservatives and liberals relate to mortality differently. For that, the actual research is suggestive but not conclusive.

Terror Management Theory

Since the late 1980s, psychologists Jeff Greenberg, Tom Pyszczynski, and Sheldon Solomon have run hundreds of "mortality salience" experiments — briefly prompting people to think about their own death, then measuring how their attitudes shift. The consistent finding: death reminders increase people's attachment to their existing cultural worldview and in-group. In Western samples, this has often shown up as a temporary shift toward more nationalistic, authority-deferring, traditionally conservative-coded attitudes — harsher judgment of out-groups, stronger support for decisive leaders.

Later work complicated that picture. Florette Cohen and colleagues found mortality salience doesn't uniformly push people rightward — it intensifies whichever worldview a person already holds. Liberals reminded of death cling more tightly to liberal values and liberal in-groups; conservatives cling more tightly to conservative ones. The effect looks less like "death reminders make people conservative" and more like "death reminders make people defend their own team harder," which is a much less politically loaded finding than the earlier framing suggested.

The more specific claim — that conservatism itself correlates with higher baseline death anxiety — traces mostly to a widely cited 2003 meta-analysis by John Jost and colleagues ("Political Conservatism as Motivated Social Cognition"), which found a modest link between conservatism and death anxiety, threat-sensitivity, and related traits. That paper is also widely criticized: for small effect sizes, for choosing traits in a way critics say flatters one side of the spectrum, and for not holding up cleanly across cultures. Similar motivated-cognition patterns — dogmatism, in-group bias, threat sensitivity — show up on the left too, just attached to different threats, like inequality or environmental catastrophe.

The honest summary: there's no conclusive, settled finding that conservatives and liberals have fundamentally different attitudes toward death itself. What does exist is a well-replicated effect where mortality reminders intensify people's existing political and cultural attachments — plus a separate, more contested claim that conservatism specifically correlates with higher baseline death-anxiety, with real methodological critics on both ideological sides.

The "alternate facts" moment

The phrase entered the language on January 22, 2017, when White House counselor Kellyanne Conway defended a disputed claim about inauguration crowd size on Meet the Press by describing the administration's version as "alternate facts." The host's on-air reply — that facts aren't alternate, they're facts — became one of the most-quoted exchanges of that news cycle.

The phrase stuck because it named something people already sensed was happening but hadn't had a label for: not just spin or emphasis, but a willingness to assert a competing version of a checkable, physical fact. It became shorthand for a broader "post-truth" anxiety — the worry that shared reality itself, not just shared values, was breaking down. Critics on the right have pushed back that the label gets applied selectively, pointing to plenty of confident, later-retracted claims from institutions and outlets across the spectrum. Both points can be true at once: the specific 2017 claim was factually wrong, and concern about selective fact-checking is a separate, legitimate question.

Cheron, forty years early

"Let That Be Your Last Battlefield" (Star Trek, 1969)

In this original-series episode, the Enterprise picks up two survivors of a planet called Cheron: Bele and Lokai, each with a face split black on one side and white on the other — mirror images of each other. To the Enterprise crew they look identical. To Bele and Lokai, the fact that Lokai is black on the left and white on the right, while Bele is the reverse, is the entire history of their civilization: millennia of oppression, war, and finally the total destruction of their homeworld. Neither can see what the other sees. Neither can be talked out of what, to him, is simply and obviously true.

The episode is blunt by design, but the mechanism it dramatizes is the same one described above: two observers looking at identical information and perceiving a completely different — and, to each of them, self-evident — reality, because the meaning they've attached to that information was set long before the conversation started.

Where this leaves things

None of this means facts don't exist, or that all claims are equally valid — some things genuinely are checkable and false claims about them are still false, whoever makes them. What it does suggest is that polarization isn't only, or even mainly, a values problem. It's an information-and-identity problem, and it responds differently to different fixes: shared, trusted fact-checking sources; media literacy; and — the harder one — enough cross-cutting contact with the other side that "the other side" stops being an abstraction and starts being a person whose facts you actually have to reckon with.