I have now had a few years of experience doing architectural and interior design for many spaces that people seem to really love (most widely known Lighthaven, but before that we also had the Lightcone Offices, though I've also played a hand in designing some of the most popular areas at Constellation a few years back).

Most people (including me a few years back) have surprisingly bad introspective access into why a room makes them feel certain things. Most of the time, people's ability to describe the effect of a space on them is as shallow as "this place feels artificial", or "this place has bad vibes", or "this place feels cozy". And if they try to figure out why that is true, they quickly run into limits of their introspective access.

The most common reason why a space feels bad, is because it is lit by low-quality lights.

Our eyes evolved to see things illuminated by sunlight. Correspondingly, it appears that the best proxy we have for whether the light in a room "works" is how similar the light in that room is to natural sunlight. The most popular way of measuring how much light differs from [...]

The original text contained 2 footnotes which were omitted from this narration.

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First published:

April 19th, 2026

Source:

https://www.lesswrong.com/posts/dWib7qinqymfxevE4/feel-like-a-room-has-bad-vibes-the-lighting-is-probably-too

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Narrated by TYPE III AUDIO.

Or, the end of the world is no excuse for sloppy work

One morning when I was nine, my dad called me over to his computer. He wanted to show me this amazing Korean scientist who had managed to clone stem cells, and who was developing treatments to let people with spinal cord injuries – people like my dad – walk again on their own two legs.

I don't remember exactly what he said next, or what I said back. I have a sense that I was excited too, and that I was upset when I learned the United States had banned this kind of research.

Unfortunately, his research didn’t pan out. No such treatment arrived. My dad still walks on crutches.

Years later, I learned that the scientist, Hwang Woo-Suk, had been exposed as a fraud.

In 2004, Hwang published a paper in Science claiming that his team had cloned a human embryo and derived stem cells from it (the first time anyone had done this). A year later, in 2005, he published a second paper claiming that they managed to repeat this feat eleven more times, producing 11 patient-specific stem cell lines for patients with type 1 [...]

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First published:

April 19th, 2026

Source:

https://www.lesswrong.com/posts/GNjDC6jtjr2iiE45i/quality-matters-most-when-stakes-are-highest

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Narrated by TYPE III AUDIO.

It's been about four years since Eliezer Yudkowsky published AGI Ruin: A List of Lethalities, a 43-point list of reasons the default outcome from building AGI is everyone dying. A week later, Paul Christiano replied with Where I Agree and Disagree with Eliezer, signing on to about half the list and pushing back on most of the rest.

For people who were young and not in the bay area, like me, these essays were probably more significant than old timers would expect. Before it became completely consumed with AI discussions, LessWrong was a forum about the art of human rationality, and most internet rationalists I knew thought of it as a mix between that and a place to write for people who liked the sequences. It wasn't until 2022 that we were exposed to all of the doom arguments in one place, and it was the first time in many years that Eliezer had publicly announced how much more dire his assessment was since the Sequences. As far as I can tell AGI Ruin still remains his most authoritative explanation of his views.

It's not often that public intellectuals will literally hand you a document explaining why [...]

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Outline:

(02:51) AGI Ruin

(02:54) Section A (Setting up the problem)

(12:18) Section B.1 (Distributional Shift)

(22:16) Section B.2:  Central difficulties of outer and inner alignment.

(32:21) Section B.3:  Central difficulties of sufficiently good and useful transparency / interpretability.

(41:29) Section C (What is AI Safety currently doing?)

(44:34) Overall Impressions

The original text contained 4 footnotes which were omitted from this narration.

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First published:

April 19th, 2026

Source:

https://www.lesswrong.com/posts/PgJYwnN7fZKipgMz4/reevaluating-agi-ruin-in-2026

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Narrated by TYPE III AUDIO.

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Images from the article:

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[Author's note: this post is the narrative version that explains my journey with OCD and how I treated it. The short version provides quick, actionable advice for treating OCD.]

The following is the most painful experience I've ever had.

Four years ago in the parking lot of my rock climbing gym…

…my heart was pumping out of my chest, I was sweating profusely, and an overwhelming sense of panic and impending doom had a vice grip on my soul. A painful death was surely imminent. I felt like I was defusing a bomb that was on the verge of exploding.

In reality, I was standing outside of my car after locking it with only one *beep* of my key fob, instead of my normal 5-6 *beeps* I usually do.




The reason I undertook this (basically suicidal) task was because it was getting annoying how many more *beeps* it was taking for my car to feel locked. It used to be only 2-3 *beeps* a few years ago. Now it was 5-6. In a few more years, it might take as many as 10-20 *beeps*.

One time on a hike with friends, a sense of panic overcame me. [...]



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Outline:

(00:24) The following is the most painful experience Ive ever had.

(07:34) OCD

(12:28) Deconstructing OCD into its two parts

(12:49) (1) Severe Anxiety

(15:53) (2) Disordered Thoughts

(18:06) My dating life

(23:34) So what caused me to finally get help with my OCD?

(26:22) Solutions

(28:39) Panic Meditation

(41:31) Three mini-examples of my improvement

(41:35) A) Panic at the grocery store (and no, sadly, not Panic! At The Disco)

(42:30) B) Moral OCD at the gym

(43:49) C) Disordered thoughts while on a date

(50:35) Where Im at today

(58:41) Further resources

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First published:

April 18th, 2026

Source:

https://www.lesswrong.com/posts/fgDqnwQj3AP9mKRRG/having-ocd-is-like-living-in-north-korea-here-s-how-i

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Narrated by TYPE III AUDIO.

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Images from the article:

Apple Podcasts and Spotify do not show images in the episode description. Try Pocket Casts, or another podcast app.

Epistemic status: Completely schizo galaxy-brained theory

Lightcone[1] operates on a "generalist" philosophy. Most of our full-time staff have the title "generalist", and in any given year they work on a wide variety of tasks — from software development on the LessWrong codebase to fixing an overflowing toilet at Lighthaven, our 30,000 sq. ft. campus.

One of our core rules is that you should not delegate a task you don't know how to perform yourself. This is a very intense rule and has lots of implications about how we operate, so I've spent a lot of time watching people learn things they didn't previously know how to do.

My overall observation (and why we have the rule) is that smart people can learn almost anything. Across a wide range of tasks, most of the variance in performance is explained by general intelligence (foremost) and conscientiousness (secondmost), not expertise. Of course, if you compare yourself to someone who's done a task thousands of times you'll lag behind for a while — but people plateau surprisingly quickly. Having worked with experts across many industries, and having dabbled in the literature around skill transfer and training, there seems to be little difference [...]

The original text contained 5 footnotes which were omitted from this narration.

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First published:

April 18th, 2026

Source:

https://www.lesswrong.com/posts/KRLGxCaqdgrotyB8z/there-are-only-four-skills-design-technical-management-and

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Narrated by TYPE III AUDIO.

One way intellectual progress stalls is when you are asking the Wrong Questions. Your question is nonsensical, or cuts against the way reality works. Sometimes you can avoid this by learning more about how the world works, which implicitly answers some question you had, but if you want to make real progress you have to develop the skill of Righting a Wrong Question. This is a classic, old-school rationalist idea. The standard examples are asking about determinism, or free will, or consciousness. The standard fix is to go meta. Ask yourself, "Why do I feel like I have free will" or "Why do I think I have consciousness" which is by itself an answerable question. There is some causal path through your cognition that generates that question, and can be investigated. This works great for some ideas, and can help people untangle some self-referential knots they get themselves into, but I find it unsatisfying. Sometimes I want to know the answer to the real question I had, and going meta avoids it, or asks a meaningfully different question instead of answering it. Over time, I've stumbled across another way to right wrong questions that I find myself using more [...]

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First published:

April 13th, 2026

Source:

https://www.lesswrong.com/posts/emsDJNmxBu8Tt6PHt/meaningful-questions-have-return-types

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Narrated by TYPE III AUDIO.

(The better telling is here. Seriously you should go read it. I've heard this story told in rationalist circles, but there wasn't a post on LessWrong, so I made one)

Today is April 15th, Carpathia Day. Take a moment to put forth an unreasonable effort to save a little piece of your world, when no one would fault you for doing less.

In the early morning of April 15, the RMS Titanic began to sink with more than two thousand souls on board.

Over 58 nautical miles away — too far to make it in time — sailed the RMS Carpathia, a small, slow, passenger steamer. The wireless operator, Harold Cottam, was listening to the transmitter late at night before he went to bed when he got a message from Cape Cod intended for the Titanic. When he contacted the Titanic to relay the messages, he got back a distress signal saying they hit an iceberg and were in need of immediate assistance. Cottam ran the message straight to the captain's cabin, waking him.

Captain Arthur Rostron's first reaction upon being awoken was anger, but that anger dissolved as he came to understand the situation. Before he'd [...]



The original text contained 1 footnote which was omitted from this narration.

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First published:

April 15th, 2026

Source:

https://www.lesswrong.com/posts/SARCiTFJfXJJhpej7/carpathia-day

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Narrated by TYPE III AUDIO.

Epistemic status: All of the western canon must eventually be re-invented in a LessWrong post, so today we are re-inventing modernism.

In my post yesterday, I said:

Maybe the most important way ambitious, smart, and wise people leave the world worse off than they found it is by seeing correctly how some part of the world is broken and unifying various powers under a banner to fix that problem — only for the thing they have built to slip from their grasp and, in its collapse, destroy much more than anything previously could have.

I think many people very reasonably understood me to be giving a general warning against centralization and power-accumulation. While that is where some of my thoughts while writing the post went to, I would like to now expand on its antithesis, both for my own benefit, and for the benefit of the reader who might have been left confused after yesterday's post.

The other day I was arguing with Eliezer about a bunch of related thoughts and feelings. In that context, he said to me:

From my perspective, my whole life has been, when you raise the banner to oppose the apocalypse, crazy [...]

The original text contained 1 footnote which was omitted from this narration.

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First published:

April 16th, 2026

Source:

https://www.lesswrong.com/posts/w3MJcDueo77D3Ldta/let-goodness-conquer-all-that-it-can-defend

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Narrated by TYPE III AUDIO.

Epistemic status: All of the western canon must eventually be re-invented in a LessWrong post. So today we are re-inventing federalism.

Once upon a time there was a great king. He ruled his kingdom with wisdom and economically literate policies, and prosperity followed. Seeing this, the citizens of nearby kingdoms revolted against their leaders, and organized to join the kingdom of this great king.

While the kingdom's ability to defend itself against external threats grew with each person who joined the land, the kingdom's ability to defend itself against internal threats did not. One fateful evening, the king bit into a bologna sandwich poisoned by a rival noble. That noble quickly proceeded to behead his political enemies in the name of the dead king. The flag bearing the wise king's portrait known as "the great unifier" still flies in the fortified cities where his successor rules with an iron fist.

Once upon a time there was a great scientific mind. She developed a new theoretical framework that made large advances on the hardest scientific questions of the day. Seeing the promise of her work, new graduate students, professors, and corporate R&D teams flocked into the field, hungry to [...]

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First published:

April 15th, 2026

Source:

https://www.lesswrong.com/posts/jinzzbPHshif8nmnw/do-not-conquer-what-you-cannot-defend

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Narrated by TYPE III AUDIO.

TLDR: I flew to Oregon to investigate Nectome, a brain preservation startup, and talk to their entire team. They’re an ambitious company, looking to grow in a way that no cryonics organization has before. Their procedure is probably much better at saving people than other orgs, and is being offered for as little as $20k until the end of April — a (theoretical) 92% discount. (I bought two.) This early-bird pricing is low, in part, due to some severe uncertainties, in both the broader world and in Nectome's ability to succeed as a business.

Meta:

• I'm Max Harms, an AI alignment researcher at MIRI and author.
• This deep-dive only assumes functionalism and a passing familiarity with cryonics, but no particular knowledge of Nectome.
• I have been a cryonics enthusiast for my whole adult life, and that is probably biasing my views, at least a little. I want Nectome to succeed.
• That said, I am also a rationalist, and I have worked very hard to set aside my wishful thinking and see things with cold objectivity.
• Throughout the essay, I've attached explicit probabilities for my claims in parentheticals. You can click these probabilities to access Manifold markets so we [...]

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Outline:

(02:04) 1. The Problem

[... 24 more sections]

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First published:

April 15th, 2026

Source:

https://www.lesswrong.com/posts/3i5GMhpGbDwef9Rns/nectome-all-that-i-know

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Narrated by TYPE III AUDIO.

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Images from the article: