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Amber Case
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Picture yourself checking into a hotel during a work trip. You’re groggy after a long day, but there's a dumb new interface to learn.
hotel dumb checking
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21 September
Founder of the Free Software Movement and the GNU Project, original author of GNU Emacs and the GNU General Public License, and long-time president of the Free Software Foundation.
https://www.theguardian.com/us-news/2026/sep/18/us-men-deported-hotel-equatorial-guinea The bully deported people to tyrannical Equatorial Guinea who had no roots there. That was one injustice, and it led to another: two of them talked to the press about their mistreatment there, and the state tortured them as an example to gag the others. Equatorial Guinea is so repressive that it is a crime to deport anyone there under any circumstances. Related
20 September
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Cheap hotels are now generally better than expensive hotels because they're not run by ESG eco hotel brands whose ACs gaslight you and make you wake up at night in sweat! Crazy Quoting @johnkonrad My month-long California vacation is over. I spent most of it on my yacht—but I also stayed in a number of motels. Yes. Motels. Cheap motels. I normally stay at Hiltons. The first week of my vacation, I did. Then I woke up sweating in the middle of the night because of lousy AC controlled by a gasl… Related
Creator of Flask and Jinja. Writes about software at lucumr.pocoo.org.
Dumb rules are dumb rules. But what really annoys me about the German speaking world is that the default behavior is to defend every stupid damn rule. Quoting @emrenakyol I thought Germany and German bureaucracy cannot shock me anymore, but it did. I parked my TESLA (!) on an EV-only parking spot in @Konstanz and plugged it into an EV charger. Came back to this fine. Had to use Grok to even understand what was wrong. Turns out you need to have a special EV licence o… Related
19 September
Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
You can now easily use Jev in @kodykoala: https://t.co/9wowF8KzV9 You can use this when you need typed decisions fast: - An inbox floods in and you need to know which messages are actionable, which can wait, and which are noise. - A support thread arrives and you want the right team, an urgency score, and whether to escalate in one pass. - You're checking a refund against order and policy text and need a clear yes/no with confidence. - Chat or tickets mix bugs, feature asks, and banter; you want a label and whether there’s enough detail to file an issue. - Alerts keep firing and you need “rea… Related
Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.
From one piece
What I believe about the future of software development
2 beliefs, in the piece's order there
Their words
A lot of UI exists because software can’t understand what you want. Menus, settings screens, dashboards, filters: much of it is a human-accessible API to a dumb machine. Smart machines need much less UI.
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thorstenball.com
Their words
And what we consider a smart model today will be considered very dumb in the future. But a smarter model makes less mistakes, needs fewer turns.
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thorstenball.com
18 September
Economics writer; author of the Noahpinion newsletter.
Their words
Well, there you have it folks. Hasan Piker and Donald Trump, equally dumb and bad.
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@Noahpinion on X x.com
17 September
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
✨ First hotel bookings revenue from https://t.co/Q8UoUHMumR! $3,240 in first 2 weeks So about $6,480/mo Much more than I expected! Quoting @levelsio ✨ New mini feature requested by @shmichael_eth on my ideas and bugs board 📍 Sort by distance to a pin on the map Sometimes you need to find a hotel near a specific place Now on Hotelist you can tap Sort by -> Distance to point -> Select point on map Then you can filter further by minimum score, ye… Related
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
16 September
Writer and academic, author of The Cult of Smart and How Elites Ate the Social Justice Movement; writes a daily newsletter on politics, education and culture.
15 September
Founder of Farnam Street (fs.blog) and host of The Knowledge Project podcast. Writes and curates on decision-making, mental models and rational thinking.
Lazy work used to mean too little output. Now, with AI, it often means too much and more work for everyone else. @tobi call it "slop grenades." A "Slop Grenade" is when you let AI produce the work and pass it on without adding any value (including checking it). Someone else has to wade through it, catch the mistakes, and clean up the mess. You save time and look productive but someone else pays for it. Quoting @shaneparrish My third conversation with Shopify co-founder and CEO @tobi. 0:00 How Shopify Uses AI 7:18 River: Shopify's Internal AI 8:55 How to Encourage Osmosis Learning 10:52 AI Dreaming and Self-Reflection 11:53 How to Use AI for Strategic Decision Making 14:11 The One Thing AI Cannot Do 16:04 What AI is Ma… Related
13 September
Economist and journalist; Financial Times columnist as The Undercover Economist, author of How to Make the World Add Up, and presenter of the Cautionary Tales podcast.
I've been checking the source of quotes for my forthcoming book, and the performance of Gemini is extraordinary. I paste the quote into Google, and Gemini will barge in with the wrong answer over and over again. It's not an occasional thing - it's reliably wrong. Very odd. Quoting @TimHarford Twice in past week I've pasted quote into Google to check the source, and Gemini has barged in with the wrong answer. CS Lewis quote from The Seeing Eye (1967) was placed in The Screwtape Letters (1942). Alfred Loftus quote (1857) attributed to Austen Layard (1849). Gemini 0/2. Google Related
12 September
Economist and Nobel laureate. Wrote a New York Times column for 25 years until December 2024 and now publishes several times a week on Substack.
Their words
the more that we see actors looking to weaponize without any very good maps of how and what they are doing or what kinds of unexpected repercussions might happen, the more we can expect not simply increased risks of tension and worry, but also people screwing up, doing dumb stuff.
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paulkrugman.substack.com
11 September
American author of The Subtle Art of Not Giving a F*ck and Everything Is F*cked. Writes essays and book reviews at markmanson.net.
Feels like half of my days are spent me telling Claude how fucking dumb it is and it simply responding "Fair." and then continuing to be dumb. Anthropic Related
Interviewer; the Dwarkesh Podcast runs long, heavily researched conversations with AI researchers, historians and economists.
Short Why the Newest AI Model Feels Dumb After a Month Related
9 September
Bootstrapper and investor. Founder of TinySeed and MicroConf, host of the Startups for the Rest of Us podcast, and author of several books on self-funded software startups.
I just interviewed Steve Blank for @startupspod. We focused on how AI is causing founders to build more while learning less. One line that stuck with me about founders building too much, too quickly due to vibe coding: “Polished deliverables hid shallow assumptions.” You can't just build because it's fast and easy. You need to be learning and checking your assumptions before (and while) building. His famous quote, “There are no facts inside the building,” is as true today as ever. This episode will be out in a couple weeks. startups Related
Software engineer and founder of Block Party; previously an engineer at Pinterest and Quora, and a co-founder of the non-profit Project Include and the tech diversity data project Where are the Numbers?
following my instinct around and apologizing on its behalf for dumb mistakes. did we tame the wheat or did the wheat tame us Related
7 September
Software engineer who writes about low-level and systems programming at nullprogram.com; author of the Elfeed feed reader, the Endlessh SSH tarpit and Enchive.
6 September
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
Reasoning from scratch round 2: In this video, I cover the text generation process in LLMs and KV caching (to prepare the base model before adding reasoning techniques in the upcoming ones). 00:00 Introduction and reasoning model demo 01:55 How to work through the book 05:00 Chapter 2 overview 08:25 Checking PyTorch and hardware support 10:26 Apple silicon and MPS caveats 15:00 Cloud GPU options 16:08 Tokens and tokenization 18:20 Qwen3 and the Reasoning From Scratch package 23:05 Encoding and decoding text 26:24 Downloading weights and selecting a device 31:01 Loading the pretrained Qwen3 mo… LLMs Related
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Their words
Great idea so I added it to https://t.co/Q8UoUHMumR Hoodmaps tags inside the map so you can book a hotel in the right place 😊
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x.com
4 September
Machine learning engineer and independent AI consultant. He writes about LLM evaluation, tooling and applied ML at hamel.dev, and previously worked on machine learning at GitHub.
I love how Teresa is merging product discovery with evals. I think its a powerful combination! I started learning about product discovery b/c of Teresa and I think its a great skill for any engineer as it helps you focus on what to build. Highly recommend checking out her work. Quoting @ttorres AI evals have been the "it" skill for product teams for over a year. I've even called evals a new discovery habit. But I still meet product teams who only have a vague idea of what evals are. And it's not their fault. Most of the writing on this topic is intended for engineers or just isn't specifi… Related
3 September
Builds developer tools — SST, and now OpenCode at Anomaly. Posts constantly on x.com and writes almost never; the blog stopped in 2021.
Their words
people ask us if we'll train our own model and the answer currently is no
1. we are too dumb to
2. there's plenty of other well funded efforts
3. we need to remain a neutral ground for models to battle
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@thdxr on X x.com
2 September
Chilean web engineer building web experiences since 2006; co-founder of Media Creators and writes at iolivares.com.
Yesterday I worked for ~20hs with my agents using Cursor and Claude and when I moved to sleep time I turned on the "autonomous" skill to all my agents. Today, checking the work done, almost 40% was blocked because reasons and when I ask they say "Sorry, my work was left unfinished..." Weird... computation outage? Anthropic Related
26 August
Programmer; makes Handmade Hero and teaches Performance-Aware Programming, and argues loudly about how software got slow.
Their words
What is the underlying hardware capable of doing at its theoretical peak? And then you measure the delta between that theoretical maximum and what you have achieved.
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youtube.com
21 August
Writer and former Substack product manager; publishes essays and interviews on technology, culture and China at jasmi.news.
20 August
Author of Recoding America; founded Code for America and was US deputy chief technology officer from 2013 to 2014. Writes Eating Policy on why governments cannot do what they decide to do.
18 August
Design engineer and illustrator; makes visual essays on programming, anthropology and what language models do to the way people write.
August 2026 I'm writing this from a homely Jacobean-manor-turned-hotel in the West Country, covered in layers of green vines and circled by centenarian trees, on a rare weekend away. Everything is warm: the late afternoon sun, the…
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14 August
London-based front-end architect, web developer evangelist and cloud consultant; Microsoft MVP. Writes at praveen.science and answers on Stack Overflow.
Did your phone just explode with this severe alert too? 🤔 Literally ran helter-skelter around my place checking for smoke before realising it was a national wildfire warning on my screen. 📲 #UK #EmergencyAlert #PublicSafety #CrisisManagement #UKGovernment #MobileTechnology Related
6 August
Writer on happiness, habits and human nature. Author of The Happiness Project, Better Than Before and The Four Tendencies, and host of the Happier with Gretchen Rubin podcast.
Their words
If you keep adding deadlines without also checking whether the workload itself is sustainable, you risk what I call Obliger-rebellion-the point where an Obliger who has met, met, met, and met expectations suddenly snaps and refuses to meet any more.
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gretchenrubin.com
27 July
Creator of Claude Code at Anthropic.
Writer and academic, author of The Cult of Smart and How Elites Ate the Social Justice Movement; writes a daily newsletter on politics, education and culture.
20 July
Professor of psychology at the University of Toronto and Brooks and Suzanne Ragen Professor Emeritus at Yale. Author of Against Empathy, The Sweet Spot and Psych, and writer of the Small Potatoes newsletter.
15 July
Web designer; founder of SimpleBits, co-founder of Dribbble, and author of Bulletproof Web Design and Handcrafted CSS.
Mastodon Kyroh is my latest Danmade typeface, inspired by a vintage Egyptian hotel luggage tag. Comes in 3 weights with a no-fuss license—or join my Secret Club™ and get all of my fonts + other perks. simplebits.shop
Related
Bluesky Kyroh is my latest Danmade typeface, inspired by a vintage Egyptian hotel luggage tag. Comes in 3 weights with a no-fuss license—or join my Secret Club™ and get all of my fonts + other perks. simplebits.shop
Related
14 July
Co-founder of Modem and a founding engineer at Sentry, where he went on to be VP of Engineering. Co-author of Third-party JavaScript, and co-host of the State of Agentic Coding podcast with Armin Ronacher.
🎙️ State of Agentic Coding #8 with guest Mario Zechner is out. In this episode: - Vibe-checking Fable & GLM 5.2 - @mitsuhiko.at teaches us RL - How harnesses smooth out model jank - Loops, surviving AI fomo, and more YT: www.youtube.com/watch?v=_lfp... Spotify: open.spotify.com
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13 July
Professor of psychology at UCLA, where he studies human memory, attention and cognitive ageing, and author of Better with Age: The Psychology of Successful Aging.
Their words
It's as simple as you you need to know your hotel room number when you're staying there. But if I ask you your hotel room number a week later, it's gone. But that's good in a way because you're going to have other numbers to remember and other hotel room numbers to remember. So there's benefits of forgetting.
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youtube.com
7 July
Web designer; founder of SimpleBits, co-founder of Dribbble, and author of Bulletproof Web Design and Handcrafted CSS.
Mastodon My latest typeface, Kyroh, is out today! Three weights of a Danmade, imperfect display sans based on an old Egyptian hotel luggage tag. Get it on its own or along with all my fonts by joining my Secret Club ✨ simplebits.shop
Related
Bluesky My latest typeface, Kyroh, is out today! Three weights of a Danmade, imperfect display sans based on an old Egyptian hotel luggage tag. Get it on its own or along with all my fonts by joining my Secret Club ✨ simplebits.shop
Related
2 July
Founder and editor-in-chief of MacStories, writing about Apple software, iPad workflows and automation since 2009. He co-hosts the AppStories podcast.
Their words
Whether you’re a web developer or tinkerer, I highly recommend checking out what Apple has released in Safari Technology Preview.
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macstories.net
30 June
Web designer; founder of SimpleBits, co-founder of Dribbble, and author of Bulletproof Web Design and Handcrafted CSS.
Mastodon More on this one soon, but I just shared the free pre-release of Kyroh (my latest typeface) with Secret Club™️ members. It’s inspired by an Egyptian hotel luggage tag’s lettering and comes in three weights. simplebits.com
Related
Bluesky More on this one soon, but I just shared the free pre-release of Kyroh (my latest typeface) with Secret Club™️ members. It’s inspired by an Egyptian hotel luggage tag’s lettering and comes in three weights. simplebits.com
Related
29 June
Founder and editor-in-chief of MacStories, writing about Apple software, iPad workflows and automation since 2009. He co-hosts the AppStories podcast.
16 June
Mac and iOS developer; founder of Red Sweater Software (MarsEdit, FastScripts) and co-host of the Core Intuition podcast.
Amazing, after a year, @HyattConcierge still has $1000+ of my money that I spent on a hotel room I never stayed at, that @bookingcom ASSURED me was canceled with no fee. These companies trading blame while meanwhile I'm still out $1000 for trusting either of them. Related
13 May
Danish software engineer and Microsoft technical fellow, creator of Turbo Pascal and Delphi and lead architect of C# and TypeScript.
TypeScript JavaScript
Their words
So, if we're checking 99% instead of 100%, well, heck, that's better than the 0% that JavaScript checked, right? And it gives you like language features that no other languages can provide because they can't get to 100%.
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youtube.com
22 April
Programmer based in Vancouver who writes at scattered-thoughts.net about databases, programming language design and developer tools; author of the Imp, Dida and Zest language experiments.
7 April
Programmer based in Vancouver who writes at scattered-thoughts.net about databases, programming language design and developer tools; author of the Imp, Dida and Zest language experiments.
Programmer based in Vancouver who writes at scattered-thoughts.net about databases, programming language design and developer tools; author of the Imp, Dida and Zest language experiments.
11 March
Programmer and essayist who has worked at Amazon, Google, Grab and Sourcegraph. Best known for the long-form essays collected as Stevey's Drunken Blog Rants and Stevey's Blog Rants.
Writer and illustrator, author of Am I There Yet? and Out of the Blue; writes the newsletter Out of the Blue on grief, joy and everyday attention.
16 February
Programmer and teacher; writes on software, learning and the web, and makes the Coding Blocks video course.
22 January
Law professor at Berkeley and the leading scholar of the Fourth Amendment as it applies to computers; writes at the Volokh Conspiracy.
Their words
Given the focus in Coolidge, Shadwick, and Payton on the fundamental role of warrants in inserting a judicial check on the executive, it seems out of place to say that this can be satisfied by the executive checking itself.
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reason.com
7 January
Writer on the intersection of technology and finance. Author of the Bits about Money newsletter and host of the Complex Systems podcast; previously at Stripe.
14 December 2025
Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.
Their words
It's a beautiful sweater and 100% wool. So far they're pilling a little (to be expected), so I'll definitely be checking in on this one next year. That price is hard to trust.
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haleynahman.substack.com
13 December 2025
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Their words
Google Maps essentially really doesn't work in China, the location of our hotel Aman in Beijing for example was completely wrong
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levels.io
9 December 2025
Vice chairman of Ogilvy & Mather Group, the advertising agency; author of Alchemy (2019) and the Wiki Man columnist at The Spectator.
Their words
the dorman was doing multiple things, many of which were human and kind of tacit. Security would be one. You know, there are no vagrants to sleep in the doorway, hailing taxis, dealing with luggage, recognizing regular guests, providing status to the hotel. There are loads and loads of value creation components to that dorman which aren't captured in the open the door definition.
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youtube.com
Writer of the newsletter bookbear express, on psychology, relationships, non-attachment and taste; based in San Francisco.
Their words
My Oura ring. I hesitated for a long time but it sparks joy. I think Apple Watches are ugly and I didn't like the Whoop nearly as much. I love checking the app every day.
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avabear.xyz
5 October 2025
American senior staff engineer working on developer and user experience and open source; writes at adamdehaven.com.
Nothing as humbling as using the gym at a hotel in Europe and converting pounds to kilograms 😅 Doesn’t help I’ve been traveling for almost 4 weeks straight Budapest // Colorado // Spain Europe Related
12 March 2025
Co-founder of Ximian and Xamarin; CEO of GitHub from 2018 to 2021; now an independent investor and funder of open technical projects, including the Vesuvius Challenge to read the Herculaneum Papyri.
@eightsleep you guys need a hotel edition that can be controlled with a dial on top (and/or easily temporarily paired with a smart phone). I'd select hotels on this basis if this existed. Related
7 February 2025
American travel writer and broadcaster. Runs Rick Steves' Europe and writes the guidebooks, packing advice and travel-tip articles published on ricksteves.com.
Their words
Small day pack. A lightweight pack is great for carrying a sweater, camera, guidebook, and picnic goodies while you leave your large bag (with most of your belongings) at the hotel.
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ricksteves.com
13 October 2024
Pen name of the Canadian-American writer behind mrmoneymustache.com, a blog on frugality, early retirement and index-fund investing that has run since 2011.
14 April 2024
Member of technical staff at Anthropic. He has led ML/AI teams at Amazon, Alibaba and Lazada, and writes about LLMs, recommender systems and engineering at eugeneyan.com.
20 November 2023
Writer and teacher on productivity and personal knowledge management. Author of Building a Second Brain and founder of Forte Labs, which runs the course of the same name.
Their words
I recommend checking out Nick Milo’s video How to Switch From Evernote to Obsidian if that’s you.
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fortelabs.com
10 September 2023
Researcher and science writer. Co-founder and editor at Works in Progress magazine, formerly a researcher at Our World in Data, and author of the Scientific Discovery newsletter on science, global health and medical innovation.
3 July 2023
Journalist; wrote We Are Eating the Earth on food and climate, and writes the newsletter Emissions.
25 April 2023
Software engineer writing about maintenance, open source and the industrial reality of software — the author of "I am not a supplier".
We Need More Process Engineering in Software When you peruse the depth of software engineering as a discipline, you find a lot of techniques and tools laying around in corners. Pattern matching, tighter type-checking compilers, property-based testing, snappy IDE,…
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2 March 2023
Development economist; argues that letting people move to rich countries does more for the poor than aid, and wrote Let Their People Come.
7 February 2023
Writer and researcher, founder of New Science; writes essays on science funding, sleep research, productivity and ambition at guzey.com.
Their words, before
Experiencing sleepiness is normal and does not necessarily imply that you are undersleeping.
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Their words now
Therefore, I realized that it’s very important to be as awake as possible and that my model of sleepiness where you can be “awake”, “sleepy” and “asleep” is dumb.
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3 January 2023
Programmer on the Dart language at Google and author of Game Programming Patterns and Crafting Interpreters; previously a game developer at EA.
Type Checking If Expressions I have this hobby project I’ve been hacking on for several years. It’s a fantasy console, very much inspired by the delightful PICO-8. Like PICO-8, my console has its own built-in scripting language. Because…
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Nothing matches. Show everything
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
statements, and a person can change their mind, which is recorded too.
Got it
About the English under a post
Some people here publish in a language other than English. Where they
do, this site shows a machine translation beneath the post, in
this typeface — the site's own, not theirs.
The post itself is never changed, moved or hidden: what is set in the
serif above is exactly what the person published, and it is what to
quote them on. A translation can be wrong in ways that matter,
especially about tone.
Only the post's own words are translated. A quoted post, a linked
article and a belief on korrents.com
are left in their original language.
Got it