# sadness isn't a defect, and the moon has a pit at 17 degrees

> three texts refuse the fix: loneliness is inhabited, misery is a function and not a failure, and trait anxiety isn't a learning bias, it's a world-model.

- edition: Saturday, September 19, 2026 (2026-09-19)
- notebook: essays & culture
- topics: essay · emotions · loneliness · papers
- items: 8 from 8 sources
- original: https://tonho.wtf/en/daily/2026-09-19-ensaio/
- portuguese edition: https://tonho.wtf/diario/2026-09-19-ensaio/
- authorship: written by an llm pipeline, reviewed and translated by antonio leandro (tonho.wtf)

---

The whole week came out against the fix. Loewenstein has the coldest argument: English has a word for anger, anxiety, shame, envy, regret, and almost none for the pleasure of looking forward to something good or for the absence of pain, and that asymmetry in the dictionary is a clue about function, not bad luck in the language. Popova has the most homemade argument: she wrote a children's book about loneliness whose subtitle is *how to bear your loneliness* — bear it, not leave it. And the computational psychiatry preprint arrives by the technical route, which is where the thesis gets hardest to dismiss: the field spent years looking for the defect in the anxious person's learning mechanism, found small and inconsistent effects, and the authors say that's because there is no mechanism defect, there's a belief about threat and control that the lab task never touches.

On Tuesday I noted that loneliness hadn't gone up, only time spent alone: a statistical correction. Popova is in the opposite register, and the contrast interests me more than either one on its own — she isn't arguing about how much loneliness there is in the world, she's looking for where you can live inside the loneliness that exists. Her answer is literal, with a temperature: the Moon's shadowed pits, at 17 degrees, surrounded by a surface that runs from 127 to -173. And when the pieces have to say what you do instead of curing, they all answer with craft. Dillard watching the moth burn to the end, the teenage diary re-annotated twenty years later, the girl who broke the mug and needs an escape valve.

## connection

**[The Coziest Place on the Moon: Or, How to Bear Your Loneliness](https://www.themarginalian.org/2026/09/17/the-coziest-place-on-the-moon/)**, The Marginalian — Popova tells the book's origin: in July 2022, going through an acute loneliness despite being solitary by nature, she read the NASA report on cylindrical pits on the Moon, probably collapsed lava tubes, shaded to exactly the right degree to sit at 17°C while the surface boils and freezes. Hence the story illustrated by Sarah Jacoby: on a Tuesday in July, Re wakes up feeling like the loneliest creature on Earth and rides a beam of light to go live in the coziest place on the Moon. What holds the text together is the second fact, which she stitches in without fanfare — the Moon is moving away 3.8 cm a year, more than half the speed at which a child grows, and it took two and a half centuries for anyone to believe Halley, because the Moon looks far too steady to be leaving. The definition of love she borrows from Rilke, "two solitudes that protect, border, and greet each other", is the same refusal at another scale: don't merge, don't split, share the light.

**[Misery is an emotional feature, not a glitch in the system](https://bigthink.com/books/the-opposite-of-happiness/)**, Big Think, excerpt from *The Opposite of Happiness*, by George Loewenstein — the mechanism is this: hunger, thirst and cold come with a stick and a carrot (food tastes better when you're hungry, cold water is better in the heat, this has a name, alliesthesia), but most emotions come only with the stick. Of the six basic emotions on the most common list, four are frankly bad, one is good and surprise depends on what jumps out of the box; the bad ones have a distinct facial expression and a measurable bodily effect, the good ones all give the same generic smile. The math doesn't work out on the effect either: the cockroach in the wine ruins the wine, the wine on the cockroach doesn't improve the cockroach. Loewenstein doesn't compensate for anything at the end — he cites Fredrickson admitting that the function of positive emotions remains an open problem, and leaves it open.

**[Bad Feelings](https://www.derekthompson.org/p/your-bad-feelings-are-telling-you)**, Derek Thompson — worth saying up front that the convergence here is only apparent: the piece is co-written with Loewenstein and adapted from the same book, so these are two outputs from the same source in the same week, not two authors arriving at the same place by different routes. What this version has of its own is envy, which comes not from difference but from similarity — Hume already noted that the private doesn't envy the general, he envies the corporal, and in a Berkeley study the employees who found out they earned below the median of their colleagues got more dissatisfied and more likely to look for another job, while those who found out they were above didn't get more satisfied with anything. The part I'm going to remember is another one: the proposal to think of yourself not as a unified individual but as a crowd of people stuck on the same thread of memory, and the idea that the biggest empathy gap may be the one we have with our own other versions. When I'm fine I can't picture the depressed guy, and he can't picture me.

## culture

**[Against Convenience: Embracing Friction in an Age of Endless Ease](https://3quarksdaily.com/3quarksdaily/2026/09/against-convenience-embracing-friction-in-an-age-of-endless-ease.html)**, 3 Quarks Daily — and it's a pointer to a pointer: the post points to the excerpt Longreads published from Gabe Bullard's book. What he announces is that accepting convenience usually means accepting a lower standard of product, of working conditions, of company and of art, up to the point where "experiences become transactions". Bullard makes a point of saying he isn't against technology, he's against the way we're pushed to use it. The scene in the excerpt is food delivery: the car going from one point on the map to another, the courier earning a little extra, and the restaurant owner who is still responsible for the fries arriving crisp at your door. I haven't read the book, I'm noting it because it fits uncomfortably well with the rest of the week — if discomfort is a signal, the machine that erases discomfort erases the signal along with it.

## brazil

**[A vida interior das crianças](https://quatrocincoum.com.br/entrevistas/literatura/literatura-infantojuvenil/a-vida-interior-das-criancas/)**, Quatro Cinco Um, Maria Fernanda Barros interviews X. Fang about *Pedaços* (Reco-reco) — the story is a mug: Mei Mei breaks her grandmother's favorite cup and hides in the cupboard. Fang treats the disproportion between the damage and the dread as the most realistic thing in the book, because the child is too new to the world to know which repercussions are possible, and it's the mystery of the repercussion that terrifies, not the shard. She sums it up like this: "they may not have the words to express it, but their inner life is as complex and full of nuance as an adult's". The book chases that with the means of cinema — page-turn rhythm, a thought that repeats, suspense until the character needs an escape valve. It's Loewenstein's thesis told from the inside: the bad feeling isn't asking for interpretation, it's demanding action, and pretending nothing happened is the cheapest action at hand.

## science

**[A World-Model of Trait Anxiety](https://osf.io/preprints/psyarxiv/98ktg_v4/)**, PsyArXiv — preprint, already on its fourth version, and only the abstract available. The starting point is a failure: computational psychiatry looked for the mechanisms of anxiety in general learning and planning biases and found small, inconsistent effects. The authors propose that trait anxiety isn't a bias in how a person learns any task, but a property of their world-model: what they believe about threat, control and themselves in specific domains, plus the strategies that carry those beliefs into the situation. The inversion that interests me is methodological — instead of asking whether the task finding generalizes to life, they model how much the beliefs from life generalize into the task, and treat the parameters measured in the lab as dependent on that passage. The recommendation is to personalize cognitive tasks by each person's threat content, which sounds obvious and costs a good part of the comparability between studies. It's an architecture argument, not a result, and it isn't peer reviewed.

## findings

- **[[RIDGELINE] Walking with Annie](https://craigmod.com/ridgeline/234/)**, Craig Mod. Annie Dillard died, and Mod found out in the middle of a walk in Norway with Kevin Kelly, who summed up the pull of her work as "a scientific eye elevated to a spiritual plane". The text lines up passages (the moth that burns in the candle in *Holy the Firm*, the clown made of vegetables in *Total Eclipse*, socks as corridors to other universes) and ends in a regret: she taught on the road next to his town and he could simply have shown up, because that's a thing you can do.
- **[Lauren Napier on conversing with your younger self](https://thecreativeindependent.com/people/author-poet-songwriter-and-painter-lauren-napier-on-conversing-with-your-younger-self/)**, The Creative Independent. She published her diary from 2004 to 2008 with notes made in 2026, and describes the difference between ruminating alone and talking with someone who happens to be you. The upshot: "who I was at 16 is who I am as I near 40", plus the inventory of what the old version had in courage and the current one lost by knowing more.

## stalled sources

The Convivial Society (33 days), Culture Study (31) and Adjacent Possible (41) are the three I'd miss if they didn't come back; Philosophy Now is at 48, Literary Hub at 117. Dirt (309) and Eat Your Nuts (354) aren't sources anymore, they're an archive.