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Ethan Mollick
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An opinionated guide to which AI to use to do stuff
opinionated edition
The the words it uses that this site has seen
least often elsewhere. Posts are matched on those words alone —
nothing here is a summary of this one.
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19 September
American science fiction novelist (Old Man's War, Redshirts, The Kaiju Preservation Society); has run the blog Whatever since 1998.
If it's a signed first edition it's not entirely out of line, but otherwise you can just come to one of my signing events and I'll sign your copy for free, or for the holiday season call my local bookstore and order a copy there and I'll sign/personalize it and then they'll ship it off. Quoting @msudogsrule.bsky.social Hey @scalzi.com … seems a bit steep? Related
11 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.
I did another podcast with @tobi. We ended up kinda just geeking out on AI for hours. The members' cut is out: https://t.co/iMzgh5t4aW ... I am worried this episode might be a little too nerdy for everyone, but the feedback from early listeners seems to be: 'This is the best podcast of the year; I need to listen more than once; and I am so far behind on AI.' The public release is Tuesday, and it's a little less in the weeds, but if you want the nerd edition, get the members' cut. Related
10 September
Principal engineer at Cloudflare as of 2026, on agents and developer tooling. Streams TypeScript, OCaml and Neovim on Twitch, and wrote the better-result library after writing the same Result type about a hundred times.
9 September
Prime Minister of Canada since March 2025; formerly governor of the Bank of Canada and the Bank of England.
Canada strong is not just about withstanding a crisis. It’s about coming out of it stronger. Watch the new edition of Forward Guidance: Related
Web designer and writer; founded A List Apart and Happy Cog, co-founded the An Event Apart conference, and wrote Designing With Web Standards.
★ Big, beautiful boilerplate. Opinionated, optimized, reasoned, and wonderfully explained by Declan Chidlow. vale.rocks
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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.
Prime Minister of Canada since March 2025; formerly governor of the Bank of Canada and the Bank of England.
Their words
Watch the new edition of Forward Guidance: https://t.co/75rhccwqIC https://t.co/TdMhw6rXBQ
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x.com
8 September
Prime Minister of Canada since March 2025; formerly governor of the Bank of Canada and the Bank of England.
Adversity only makes us stronger. It always has. Watch the new edition of Forward Guidance: Related
7 September
Security researcher; founded Have I Been Pwned, and writes and speaks about data breaches.
Weekly update is up! The Unscripted Edition: No agenda, all impromptu, here's what I'm up to, AMA, etc: troyhunt.com
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6 September
Security researcher; founded Have I Been Pwned, and writes and speaks about data breaches.
Weekly Update 520: The Unscripted Edition I've started playing around with YouTube's "create video thumbnail", which hopefully will give me back a bit of time in my day (it used to be a manual job in Photoshop) and be a bit more interesting. And on that note, t…
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4 September
Security researcher; founded Have I Been Pwned, and writes and speaks about data breaches.
I'm live! Weekly Update 520: The Unscripted Edition: No agenda, all impromptu, here's what I'm up to, AMA, etc: youtube.com
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Co-founder, chairman and chief investment officer of Ritholtz Wealth Management. Hosts the Masters in Business podcast for Bloomberg and wrote How NOT to Invest.
Co-founder and CEO of Stripe and co-founder of the Arc Institute. Keeps a personal site of reading lists, open questions and notes on scientific progress and how research is funded.
Their words
You should subscribe to @asteriskmgzn, in addition to @WorksInProgMag of course. They have a very good print edition.
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Their words
You should subscribe to @asteriskmgzn, in addition to @WorksInProgMag of course. They have a very good print edition.
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x.com
1 September
Principal engineer at Cloudflare as of 2026, on agents and developer tooling. Streams TypeScript, OCaml and Neovim on Twitch, and wrote the better-result library after writing the same Result type about a hundred times.
TypeScript
Their words, before
introducing better-result, my opinionated take on the rust result type for typescript after having written about 100 times
npm i better-result
*disclaimer*: if you can use effect-ts, you should use effect-ts
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Their words now
every time i’ve built something without effect over the past almost 3 years ive come to deeply regret it and wish i had just done it from the start
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30 August
CEO of SafeGraph, host of the World of DaaS podcast, and author of the Summation newsletter; previously founded LiveRamp.
does anyone read op/ed sections anymore? When I was younger it seemed like a lot of the most interesting opinions were on the op-ed pages of newspapers. You had these really interesting opinion columnists like George Will, Thomas Friedman, and others that wrote very interesting columns back in the day (when I was a kid). but today it seems the op-ed pages are for ghosts and people over 70 years old. all the interesting opinion writers have moved to creating their own newsletter, writing on X, etc. I still read the "print" edition of the Wall Street Journal every day - cover to cover ... with… Related
21 August
Sociologist at Duke University writing on markets, exchange and moral order, and on plain-text and data-visualisation tools for social science.
20 August
Psychiatrist and clinical assistant professor at Case Western Reserve University. Writes Psychiatry at the Margins on the philosophical and scientific arguments inside psychiatry and the psy-sciences.
Reposting from last year -- People Are Still Stumbling From One Misguided Narrative About the Medical Model to Another (ADHD Edition) psychiatrymargins.com
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17 August
Science fiction novelist, journalist and technology activist; writes the daily blog and newsletter Pluralistic, and coined the term enshittification.
Their words
These examples are liberally illustrated with links to musical excerpts that bring the subject to life (these are presented as hotlinks in the ebook; if you're reading the print edition, you can use the book's companion website:) https://web.law.duke.edu/cspd/musiccopyright/ Interspersed with these histories and analysis are lengthy, extremely on-point excerpts from THEFT!
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pluralistic.net
12 August
Writer living in Brooklyn and former Man Repeller features director; writes the weekly newsletter Maybe Baby on culture and consumption.
10 August
Design engineer; formerly at Linear and Vercel; author of Sonner and Vaul; teaches animations.dev.
5 August
Web standards author and speaker; wrote the CSS: The Definitive Guide series and co-founded the An Event Apart conference.
The first 11 minutes of The Flipbook of the Rings is out (“Chill Edition”). youtu.be
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31 July
French software engineer, public speaker and fully remote nomadic worker; writes about frontend development at maxpou.fr.
18 July
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).
16 July
Swedish open source developer; creator and lead maintainer of curl and libcurl, and a co-founder of the Rockbox project.
Workshop Basel day three See also: day one, day two. There is only one thing that is better than two days of HTTP workshop, and that is of course three days of HTTP workshop. The final day of this edition of the series started out with us again…
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8 July
Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation. Author of Ansible for DevOps.
6 July
Gear reviewer who publishes long-form hi-fi audio and camera equipment reviews, plus video reviews, at stevehuffphoto.com.
4 July
American historian of Central and Eastern Europe and the Holocaust; author of Bloodlands, On Tyranny and On Freedom, and writer of the newsletter 'Thinking about...'.
30 June
Programmer known for LiveJournal, memcached, OpenID and gearman; worked on the Go programming language at Google and later joined Tailscale.
16 June
Historian of the Renaissance at the University of Chicago and a science-fiction novelist; wrote Terra Ignota and Inventing the Renaissance.
Their words
and you may now use the actual Inquisition record of you having gone through censorship as the document to prove that you and only you have the right to print the book and therefore you can sue people for plagiarizing it or printing an unauthorized edition. And so, the very first version of copyright is the Inquisition.
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youtube.com
10 June
Writer and former Substack product manager; publishes essays and interviews on technology, culture and China at jasmi.news.
7 June
Coffee consultant and author of books on espresso, roasting and brewing, including The Professional Barista's Handbook and The Coffee Roaster's Companion; writes about brewing gear and roast control at scottrao.com.
Crema is rubbish, 2026 edition In 2009, James Hoffmann famously stated “crema is rubbish.” His comments generated heaps of discussion for many years, but somehow, they didn’t have much lasting impact on how people serve or enjoy espress…
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22 April
Researcher on distributed systems and local-first software at the University of Cambridge; wrote Designing Data-Intensive Applications.
Their words
In particular, for example, coverage of MapReduce was quite detailed in the first edition. But basically, MapReduce is dead. Nobody uses it anymore.
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youtube.com
17 April
Author of The Simple Path to Wealth and of the jlcollinsnh.com stock series on index-fund investing.
Some very cool news to share: Hh is releasing the paperback edition of Pathfinders! ~100 Extraordinary Stories of people like you on the Quest for Financial Independence and how to join them. lnk.to
Quoting @harrimanhouse Pathfinders, the follow-up to JL Collins' bestselling personal finance sensation The Simple Path to Wealth, will be available in US paperback format this June! Pathfinders brings together scores of amazing and insightful real-life stories from real people on the journey to financial independence –… Related
1 March
Writer, photographer and software maker based in Japan; publishes long-form essays, walking newsletters and self-made books at craigmod.com.
18 February
Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.
5 February
Writer, photographer and software maker based in Japan; publishes long-form essays, walking newsletters and self-made books at craigmod.com.
26 January
Neuroscientist and novelist writing on consciousness, artificial intelligence and culture in the newsletter The Intrinsic Perspective.
30 November 2025
Austrian developer. Created the libGDX game framework, and more recently the pi coding agent, which moved with them to Earendil — Armin Ronacher's company — in April 2026. Writes at mariozechner.at.
20 October 2025
Co-founder of Panic, the Portland software company behind Transmit, Coda, Nova and the Playdate handheld console.
Also at PRGE, I was greatly tempted to buy a CIB Yukawa-edition Dreamcast. For those not familiar, Mr. Yukawa was an actual Senior Managing Director at Sega who became an overnight celebrity in Japan for a series of hilarious self-deprecating commercials about the Dreamcast. When demand temporarily outpaced supply of the consoles, Yukawa was brought out again to make a series of equally funny "apology" commercials: https://www.youtube.com/watch?v=B_nK7j4G6fQ He was so well known, they literally put him on the box for a while. He even got his own game and a number of cameos in others. Related
19 October 2025
Professor at Wharton studying how people actually use AI, and author of Co-Intelligence. Writes One Useful Thing, where the claims are dated and testable because the thing they describe keeps changing under them.
19 September 2025
Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.
31 August 2025
Founded PSPDFKit in 2011 and ran it for a decade. Came back from a break to work on AI agents — the OpenClaw project, and OpenAI, joined in February 2026. Writes at steipete.me.
1 July 2025
Author of The Simple Path to Wealth and of the jlcollinsnh.com stock series on index-fund investing.
24 May 2025
Computer performance engineer working on datacenter performance at OpenAI, previously Netflix and Sun/Joyent. Author of Systems Performance and BPF Performance Tools, and creator of flame graphs.
Their words
Systems Performance 2nd edition - Brendan Gregg (Addison-Wesley, 2021)
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brendangregg.com
18 April 2025
Author of The Simple Path to Wealth and of the jlcollinsnh.com stock series on index-fund investing.
A New Edition of The Simple Path to Wealth Let’s start with a couple pieces of exciting news, and then I’ll fill you in. First, there is a brand new edition of The Simple Path to Wealth coming to bookstores on May 20th. Second, my pal Pete Adeney, Mr. Money Must…
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13 March 2025
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
The most viewed thing I've ever made is a short about two colliding blocks computing π. I just made a new edition of the explanation for why π shows up there, setting things up for a (coming soon) follow-on connecting it to quantum computing. youtu.be
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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
16 December 2024
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.
11 December 2024
Writes The Convivial Society, on technology and the moral life — what our tools do to attention, memory and how we treat each other.
19 October 2024
Investing columnist for The Wall Street Journal and editor of the revised edition of Benjamin Graham's The Intelligent Investor.
14 July 2024
Indian software developer working with React and TypeScript; writes and publishes a newsletter at sreetamdas.com.
Their words
Firefox Developer Edition for development/sandboxed work
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sreetamdas.com
1 July 2024
Founded SpaceX in 2002, joined Tesla's board in 2004 and became its chief executive in 2008; later founded Neuralink, The Boring Company and xAI. Bought Twitter in 2022 and renamed it X, where he now posts many times a day.
Their words
Some audiobook recommendations: The Story of Civilization by Durant Iliad (Penguin Edition) The Road to Serfdom by Hayek American Caesar by Manchester Masters of Doom by Kushner The Wages of Destruction by Tooze The Storm of Steel by Junger The Guns of August by Tuchman
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x.com
Their words
Some audiobook recommendations: The Story of Civilization by Durant Iliad (Penguin Edition) The Road to Serfdom by Hayek American Caesar by Manchester Masters of Doom by Kushner The Wages of Destruction by Tooze The Storm of Steel by Junger The Guns of August by Tuchman
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x.com
Their words
Some audiobook recommendations: The Story of Civilization by Durant Iliad (Penguin Edition) The Road to Serfdom by Hayek American Caesar by Manchester Masters of Doom by Kushner The Wages of Destruction by Tooze The Storm of Steel by Junger The Guns of August by Tuchman
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+ 2 more
Their words
Some audiobook recommendations: The Story of Civilization by Durant Iliad (Penguin Edition) The Road to Serfdom by Hayek American Caesar by Manchester Masters of Doom by Kushner The Wages of Destruction by Tooze The Storm of Steel by Junger The Guns of August by Tuchman
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x.com
Their words
Some audiobook recommendations: The Story of Civilization by Durant Iliad (Penguin Edition) The Road to Serfdom by Hayek American Caesar by Manchester Masters of Doom by Kushner The Wages of Destruction by Tooze The Storm of Steel by Junger The Guns of August by Tuchman
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x.com
17 April 2024
Author of Fluent Forever and founder of the app of the same name; teaches pronunciation first and vocabulary through images rather than translation.
5 April 2024
Wall Street Journal bestselling author on marketing and writing, partner at MarketingProfs, and writer of the fortnightly Total Annarchy newsletter.
Their words
EVERYBODY WRITES 2nd Edition now available!
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annhandley.com
18 March 2024
Web standards author and speaker; wrote the CSS: The Definitive Guide series and co-founded the An Event Apart conference.
16 January 2024
Founder of Platformer, a newsletter on tech platforms and the people they affect, and co-host of the Hard Fork podcast at the New York Times.
Their words
Gergely brings an incredible amount of reporting depth to every edition of this newsletter about the nuts and bolts of building technology. A must-read for the tech rank-and-file and their managers.
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platformer.substack.com
13 September 2023
Economic historian writing on the Industrial Revolution, the Great Divergence and the origins of modern growth.
nothing new under the sun, 1958 edition Related
23 July 2023
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.
The Comfort Crisis As with many things in life these days, it all started with an episode of the Peter Attia podcast. In this edition, our nation’s most Badass Doctor was interviewing a guest I initially dismissed as not overly applicable…
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8 December 2022
American novelist and critic, author of Real Life, The Late Americans and Minor Black Figures; writes the newsletter sweater weather on literature and culture.
Their words
I wanted the the superior UK edition of two Kawabata books, so I ordered them from eBay. They arrived in like five days. It was amazing.
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blgtylr.substack.com
30 March 2021
Software engineer who writes the blog Made of Bugs about performance, debugging and understanding computer systems. Previously worked at Anthropic on interpretability, at Stripe on Sorbet, and at Ksplice.
Some opinionated thoughts on SQL databases People who work with me tend to realize that I have Opinions about databases, and SQL databases in particular. Last week, I wrote about a Postgres debugging story and tweeted about AWS’ policy ban on internal use of SQL…
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6 March 2021
Singaporean writer and author of FRIENDLY AMBITIOUS NERD; blogs at visakanv.com about ambition, writing and thinking in public.
Their words
I can't remember when exactly I started looking into David Ogilvy – or where I got this book, probably from a secondhand bookstore somewhere – but once I started reading it I couldn't put it down. Ogilvy had such a great personality. Very spirited, opinionated guy with a great sense of occasion.
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visakanv.com
19 June 2020
Co-founder and CEO of OpenAI; previously president of Y Combinator.
Their words
This from John Schulman is worth reading: http://joschu.net/blog/opinionated-guide-ml-research.html
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blog.samaltman.com
4 December 2019
Scottish crime writer, author of the Tony Hill and Karen Pirie novels; former journalist and broadcaster.
Their words
American by Day is engagingly written. Miller isn't afraid to write characters who are opinionated. They don't hold their tongue about what they believe in, they let rip. People are angry, people are passionate. I love the unorthodoxy of it, I suppose.
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fivebooks.com
15 August 2017
Author and clean-energy analyst who writes on solar cost curves.
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