“If you can only explain the arguments of the other side because they’re mad or dangerous or dumb, the problem is with you.” — Turi Munthe

On yesterday’s show, the psychiatrist Sally Satel described how Americans imagine their own mental condition differently, depending on their politics and age. Which is a nice segue for today’s conversation with the Anglo-French journalist turned media entrepreneur Turi Munthe. It’s not just in our mental health self-evaluation, Munthe argues, that we hallucinate reality. Indeed, the French born Munthe often sounds like one of his post-structuralist compatriots in his defiantly slippery notion of ontological reality.

In Why We Think What We Think: The Unexpected Origins of Our Deepest Beliefs, Munthe argues that our deepest convictions turn out to be shaped by genetics, brain shape and sometimes even by the agricultural legacy of our distant ancestors. Left and right thinkers, Munthe argues, are different political phenotypes — each hallucinating their own version of reality.

Total relativism, then — the full French post-structuralist monty? Not quite. Here’s where Munthe’s Englishness kicks in. Following the Anglo-Russian philosopher Isaiah Berlin, Munthe insists pluralism and relativism are different. So Turi Munthe doesn’t just think what he thinks because of his English or French origins. Borrowing from the cognitive scientists Dan Sperber and Hugo Mercier, Munthe defines thinking as a “contact sport”. So, for example, believing that the 2020 election was stolen is what Munthe calls a social commitment, because humans would rather be wrong together than right alone.

Speaking of convenient segues, Munthe’s thoughts on thinking set the scene for next Tuesday’s conversation with Emily Eakin, author of The Frenchmen. It’s her history of seductive post-structuralists like Foucault, Derrida and Lacan who corrupted a whole generation of literary American Ivy Leaguers (including Eakin) into hallucinating reality.

Five Takeaways

• Pluralism Is Not Relativism. Munthe opens with Isaiah Berlin’s distinction: registering the sincerity and value of opinions across the political, religious, and ethical spectrum does not relativize truth. That Charles Windsor is King of the United Kingdom is a statement of fact; whether you’re a monarchist or a republican is where opinion begins. The book confines itself to the second category — beliefs, values, and opinions that cannot be factually proven — and asks what the nonrational influences on them actually are. The answer is humbling: genetics account for perhaps half of political persuasion, and the rest is shaped by everything from brain anatomy to the agriculture of our ancestors.

• Different Political Phenotypes. At the margins, left and right differ neurologically: right-leaners are on average more readily startled by loud noises and more attentive to threat, while left-leaners carry a slightly larger anterior cingulate cortex — the brain region where we process ambiguity and split hairs. That anatomy, Munthe argues, explains the ideological capture of academia and media better than any conspiracy: hair-splitters go where the hair-splitting is, and a conservative 22-year-old doesn’t volunteer for a newsroom where 80% of colleagues think differently. We are, in his phrase, different political phenotypes, each hallucinating a different version of reality.

• Thinking as a Contact Sport. Drawing on Dan Sperber and Hugo Mercier’s research, Munthe argues that reason didn’t evolve for solitary contemplation — Rodin’s Thinker is the wrong image — but for argument: to convince you to hunt the buffalo with me, I need reasons that look objective to you too. The evidence is everywhere, from the most impactful academic papers being written by pairs and groups to the creative density of small university towns. The implication is political: the people we disagree with are not obstacles to good thinking but the condition of it — the loyal opposition that helps us get out of ourselves.

• Wrong Together Rather Than Right Alone. Munthe’s reading of January 6 and the stolen-election faith is social rather than psychiatric: an enormous number of our beliefs matter more for what they do than for what they say, and professing them is a commitment to a group. From an evolutionary perspective, believing what your village believes — even about the god who is a giant rock at the end of the field — is intelligent, because the ostracized lose the protection of the group. The terrifying data point is the marriage test: in the 1950s, around 4% of families would have objected to a child marrying across party lines; today it approaches 45%. That is affective polarization, and it can pull societies apart.

• The Problem Is With You. Munthe spent his twenties unable to fathom American gun rights — supporters had to be bought, dumb, or morally corrupt — until he did the work and found a tradition he now calls beautiful and heroic, whether or not he shares it. His rule of thumb: if you can only explain the other side’s arguments as madness, danger, or stupidity, the problem is with you. This is not centrism — there was no middle ground on slavery or the Holocaust — but a defense of the clash itself: societies need the left to fix inequality and the right to defend the village, and we think best when the two are, in his words, continually bashed against each other.

About the Guest

Turi Munthe is a journalist and policy analyst turned media entrepreneur. He founded Demotix, which became the largest network of photojournalists in the world before its sale to Corbis in 2012, and Parlia, an encyclopedia of opinion. He has written for The Economist, The Guardian, the TLS, The Nation, and The Spectator, has sat on the boards of Index on Censorship, openDemocracy, and the Bureau of Investigative Journalism, and is a board member of the Italian media group GEDI, publisher of La Repubblica and La Stampa. He studied Arabic and History at Oxford. Why We Think What We Think: The Unexpected Origins of Our Deepest Beliefs (Penguin/Hutchinson Heinemann) is out now in the UK, with US publication early next year.

References:

• Why We Think What We Think: The Unexpected Origins of Our Deepest Beliefs by Turi Munthe (Penguin/Hutchinson Heinemann, 2026). Timothy Garton Ash: “Thinking is a contact sport.”

• Isaiah Berlin — the Anglo-Russian philosopher whose insistence that pluralism and relativism are not the same thing frames the whole book.

• Dan Sperber and Hugo Mercier...