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Statistician and software engineer who writes R packages for reproducible research and publishing, including knitr, bookdown and blogdown.

• knitr — A general-purpose tool for dynamic report generation in R

  CommitsEcho non-evaluated lines without a comment mask when eval is numeric (#2129) (#2514) · Add chunk option log.echo to stream executing code to stderr (#2222) (#2513) · spin(): add roxygen argument to preserve roxygen2 blo…

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• Passthrough Tax Loopholes & the Rise of the American Gentry: CHART OF THE DAY

  The Reagan Bargain’s Real Winners: Car Dealership Owners, Not Coders...

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• MastodonSpreads on financing the datacenter buildout are still small enough not to seriously discourage it, but large enough to reveal that the financiers are getting nervous about a non-zero chance of a bigdeal default on their loans: **DataCenter Risk Is the Real Thing: CHART OF THE DAY** For the second day in a row, looking at debt & datacenters & Interest-rate spreads; the widening in hyperscaler datacenter build-out financing spreads is not driven by dealer hedging of new issuance… 1/

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• NewsletterDataCenter Risk Is the Real Thing: CHART OF THE DAY

  For the second day in a row, looking at debt & datacenters & Interest-rate spreads; the widening in hyperscaler datacenter build-out financing spreads is not driven by dealer hedging of new issuance..

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Author of Shape Up; formerly head of strategy at Basecamp, where he worked on product design for seventeen years; now runs Felt Presence.

• Watched a bit of @poteto + team on the Grok Bot stream today. Surprised by how normal the work is, but faster. So many micro judgements and steps that weren't automated. You could pause at many moments and be like "wait why that?" and it would lead to an interesting discussion.

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• MastodonEquity investors sell the dream; bond investors price the funeral. Here’s what they’re charging those undertaking the now debt-financed DataCenter Rush: **Debt & DataCenters: CHART OF THE DAY** FaceBook bankrupt in one scenario in fifteen in five years? SpaceX & Oracle one in six? That appears to be what those willing to lend to FaceBook right now are thinking... https://braddelong.substack.com/p/hyperscaler-debt-default-risk > 2026-09-15

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• NewsletterDebt & DataCenters: CHART OF THE DAY

  FaceBook bankrupt in one scenario in fifteen in five years? SpaceX & Oracle one in six? That appears to be what those willing to lend to FaceBook right now are thinking...

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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.

• Transcript: Seth Bernstein, Chief Executive Officer of AllianceBernstein

  The transcript from this week’s, MiB: Seth Bernstein, Chief Executive Officer of AllianceBernstein, is below. You can stream and download our full conversation, including any podcast extras, on Apple Podcasts, Spotify,…

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• MastodonWhat did Trump expect his policies to do to male employment? If he had really wanted to boost male employment, he needed to pick very different policies. What we got was a gendered theory of growth, executed by a moron and staffed by the corrupt, failing exactly on its own terms: **The Feminization of Employment Growth During Trump II: CHART OF THE DAY** Trump nuked male employment-heavy green-tech infrastructure, nuked reshoring, damaged our manufacturing firms’ abilities to be efficient... 1/

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• NewsletterThe Feminization of Employment Growth During Trump II: CHART OF THE DAY

  Trump nuked male employment-heavy green-tech infrastructure, nuked reshoring, damaged our manufacturing firms’ abilities to be efficient producers in the modern globalized value-chain economy.

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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.

• cf-twitch — Twitch stream integration platform on Cloudflare Workers

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German developer; founder and lead developer of Mastodon, the decentralized open-source social network.

• Does anyone have a high resolution copy of Shishkin’s Brook in a Forest (Stream by a Forest Slope)? Wikipedia has the highest resolution I can find, but not nearly high enough to print at a reasonable size. I’ve already looked through the top hits on Google and Yandex in both English and Russian. Is this just a dead end?

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Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.

• iPhone duo built in Three.js with running apps I fed the apple announcement video and all press photos into Astra and had it build the model The apps are rendered with HTML-in-Canvas Built this on Copilot day stream - Pierce and Burke are adding more apps now
  Quoting@piercebogganJoin us for GitHub Copilot Day in 10 minutes with @burkeholland, @JamesMontemagno, @mattpocockuk, and @wesbos :)

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Writer of Lenny's Newsletter and host of Lenny's Podcast, covering product, growth and career in tech. Previously a product lead at Airbnb. Also an angel investor and advisor.

• I asked Grok Bot product lead @romanugarte_ why they built a new stand-alone app vs. building it into Cursor "It was not obvious at all. We saw what some of our competitors doing this, adding new tabs for each new form factor. People can feel that this was not a single, consistent vision of the way that work should work. It's kind of a shipping your org chart style thing that users are reacting negatively to. And so we decided, let's just start completely from scratch."
  Quoting@lennysanGrok @Bot is the hottest new AI product in the world right now. I'm absolutely hooked. It all started a few months ago as a tiny team holed up in a separate part of the office, building from scratch. Four weeks after the first line of code, the whole company was obsessed. Three weeks later, it laun…

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Product designer and entrepreneur; author of Mobile First and Web Form Design; formerly a product director at Google; now building AI products.

• 1. many professionals will feel this if they haven't yet. 2. model capabilities keep accelerating (that's GPT-6 Astra) on the bottom of the chart.
  Quoting@polynoamialIt can be hard to “feel the AGI” until you see an AI surpass you in a domain you care deeply about. This week, many mathematicians and physicists at @OpenAI had their Lee Sedol moment seeing this model solve, in minutes, open problems they’d struggled with for years.

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• Interest Rate-Hike Expectations: CHART OF THE DAY

  Expected short-term interest rates in 2028 are one percentage-point higher than they would have been otherwise because of Trump’s war on Iran. Is that a big shift or a small one?

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• A pump-and-dump dressed up as a fake cabinet post?: Elon Musk’s DOGE took money Congress had lawfully appropriated to fight disease and grow the world economy, and simply nixed it. The crypto coin that Musk was then not so quietly promoting made a round-trip: the DogeCoin chart runs $0.09 to $0.40 and back to $0.09. But the 800,000 or so who would be alive today without DOGE’s illegal and unconstitutional chaos-monkey wrecking ball did not come back: **Elon Musk & His DOGE & DogeCoin... 1/

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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.

• . @isaac_flath and I are going to see if the slop prompt is good and do some evals. (also first time trying to stream haha).

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Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.

• No typing-pool annihilation this time, at least not so far, and probably never. AI isn’t killing occupations, but watch out for the elasticity of demand!: **Retraining Workers for “AI”: CHART OF THE DAY** Firms are using AI as an excuse for layoffs, but when the New York Fed asked them if that was what they were really doing, they said: no, we are retraining workers instead... https://braddelong.substack.com/p/retraining-workers-for-ai-chart-of > 2026-09-03

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Co-founder and chief investment officer of Cambria Investment Management. He has written several books on quantitative asset allocation, blogs at Meb Faber Research and hosts The Meb Faber Show.

• ShortThe Chart Wall Street Isn't Ready For

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Writer of the 25iq blog, where he distils "a dozen things I've learned" from investors, founders and thinkers. Author of Charlie Munger: The Complete Investor and A Dozen Lessons for Entrepreneurs.

• This chart prepared by ChatGPT is not like the others. It also uses a comma in each year, which is nice.

  OpenAIRelated

Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.

• stream-systems-visual

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Professor of atmospheric sciences at Texas A&M; writes The Climate Brink with Zeke Hausfather.

• ♫ Smoke Gets in Your Eyes ♫

  and your lungs, your blood stream, your brain, just about everywhere

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Programmer; wrote Extreme Programming Explained and Test-Driven Development, signed the Agile Manifesto, and writes Tidy First?.

• How Do You Know That?

  Stream the latest episode

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Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".

• One pattern I find useful for working with LLMs is a nice long ramble session. Sometimes the LLM needs more bits to understand what you're trying to achieve, but you're too lazy to type them. In these cases I like to lean back, switch to /voice and just ramble for like 10 minutes, total mess, anything goes, full stream of consciousness. Sometimes I declare it up top, something like "switching to speech recognition sorry for any typos...". Sometimes I turn it into a small interview of a few turns. But I find that the LLMs are somehow very good at reconstructing long incoherent rambles and ofte…

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Data scientist at Our World in Data and author of Not the End of the World. Writes By the Numbers, working through energy and climate questions with the numbers in front of them, and revising in public when they say something unexpected.

• Do more Europeans die of summer heat than Americans die of guns?

  An attempt to improve a viral chart.

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Managing partner at Ritholtz Wealth Management. Writes the blog The Irrelevant Investor and co-hosts the Animal Spirits podcast with Ben Carlson.

• Micron just went on an all-time heater. Today at the open, Micron was the 10th largest stock in the S&P 500. Over the last five years, the average rank was 89. It ran from 127 last April to 10 today. Chart by @mattcerminaro

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Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.

• Constance Crozier: Forecasting s-curves is hard

  There was a famous Covid era chart that I always struggle to find, showing how hard it is to estimate an S curve while living through it. in the early days it seems that

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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.

• Shipping at Inference-Speed

  Why I stopped reading code and started watching it stream by.

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President of the United States, the 45th from 2017 to 2021 and, as of 2026, the 47th; before politics a New York property developer who ran the Trump Organization, and the host of The Apprentice from 2004 to 2015.

• THE TRUMP KENNEDY CENTER HONORS will be broadcast tonight, on CBS, and Stream on Paramount+. Tune in at 8 P.M. EST! At the request of the Board, and just about everybody else in America, I am hosting the event. Tell me what you think of my “Master of Ceremony” abilities. If really good, would you like me to leave the Presidency in order to make “hosting” a full time job? We will be honoring true GREATS in the History of Entertainment: Sylvester Stallone, Michael Crawford, KISS, George Strait, and Gloria Gaynor.

  AmericaRelated

Managing partner at Ritholtz Wealth Management. Writes the blog The Irrelevant Investor and co-hosts the Animal Spirits podcast with Ben Carlson.

• If this is the end for Tim Cook, his run will go down in history. Over $700 million of market cap has been added on average every day since he took over as CEO in 2011. Chart by @mattcerminaro

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Managing partner at Ritholtz Wealth Management. Writes the blog The Irrelevant Investor and co-hosts the Animal Spirits podcast with Ben Carlson.

• Here's a chart

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Software engineer working on distributed systems and databases; creator of rqlite, the distributed database built on SQLite.

• rqlite, the distributed database built on SQLite. 9.0 released - major upgrade. rqlite now supports Change Data Capture, allowing you to stream database changes to other systems #sqlite #golang #distributedsystems

  philipotoole.com

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Co-founder of Panic, the Portland software company behind Transmit, Coda, Nova and the Playdate handheld console.

• Has anyone tried ethernet over grape vines? You could stream "I Heard It Through The Grapevine" and literally hear it through the grapevine. Just thinkin' out loud.

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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.

• "Hair is more important than saving money" - just the latest in a never-ending joyful stream of wisdom I get in the comments on some of the oldest MMM articles!

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Creator of Claude Code at Anthropic.

• anthropic-stream-repro

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Design engineer and illustrator; makes visual essays on programming, anthropology and what language models do to the way people write.

• Smidgeons

  Welcome to the smidgeon stream. This is a new kind of content on the Garden. One that was

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Software engineer and writer; former CTO of Wave, now at Anthropic. Blogs at benkuhn.net on attention, engineering management and doing hard things well.

• New post! "Trust as a bottleneck to growing teams quickly": https://t.co/rlQBvWkQ2d Something I've been thinking about a lot given how fast Anthropic's been growing—meaning a constant stream of new people we need to proactively build trust with, ASAP. Hope it's helpful :)

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Co-founder and partner at Union Square Ventures in New York. Has written the AVC blog almost every day since 2003, on venture capital, startups, music and crypto.

• This tweet stream showcases some of the writing by USV analysts over the years. Though they have moved on to bigger and better things, their writing and their ideas live on at USV and https://t.co/btPOKgjAa4. It is a gift that keeps on giving.
  Quoting@nickgrossmanReminder that applications are now open for the next class of @USV analysts! One of the ways that USV analysts work is through writing, both about thesis areas and new investments. To give a flavor, here are some highlights of writings by USV analysts over the years:

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