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Audio • SiriusXM Podcasts & Atlas Obscura

Under Our Feet: Exploring the Underworld With Jessica Leigh Hester

Jessica Leigh Hester joins us on a deep dive into the sewer, the subject of her appropriately-titled book, Sewer. She and Dylan talk about some of the interesting (and disgusting) things she found there… like fatbergs.

All this week, we’re heading underground to discover the stories beneath our feet. 


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Text • John Gruber

Dekáf Coffee Roasters

dekaf.com/df

My thanks to Dekáf Coffee Roasters for sponsoring last week at DF. Dekáf believes that people who drink coffee for its flavor are the true connoisseurs. While other roasters treat decaf as a side project, they’ve made it their entire mission. They’re dedicated to creating ex...

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Text • John Gruber

Dan Moren’s iOS 26 Review

sixcolors.com/post/2025/09/ios-26-review-through-a-glass-liquidly/

Dan Moren, Six Colors: The redesign is more than skin deep, however. Apple has rethought the way some of its most fundamental interactions work. For example, the increasingly long horizontal popover menus that hid options behind an interminable scroll have morphed into a...

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Text • John Gruber

David Letterman Slams Jimmy Kimmel Suspension

variety.com/2025/tv/news/david-letterman-slams-jimmy-kimmel-suspension-1236523616/

Variety: “This is misery,” Letterman said when asked about Kimmel’s suspension, speaking at The Atlantic Festival 2025 Thursday in New York. “I feel bad about this,” he continued. “We see where this is all going, correct? It’s managed media. And it’s no good. It’s silly....

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Locally AI

Locally AI

Handy new iOS app by Adrien Grondin for running local LLMs on your phone. It just added support for the new iOS 26 Apple Foundation model, so you can install this app and instantly start a conversation with that model without any additional download.

The app can also run a variety of other models using MLX, including embers of the Gemma, Llama 3.2, and and Qwen families.

Tags: apple, ios, ai, generative-ai, local-llms, llms, mlx

Simon Willison's Weblog Supports Webmention
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llm-openrouter 0.5

llm-openrouter 0.5 New release of my LLM plugin for accessing models made available via OpenRouter. The release notes in full: Support for tool calling. Thanks, James Sanford. #43 Support for reasoning options, for example llm -m openrouter/openai/gpt-5 'prove dogs exist'...

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Grok 4 Fast

Grok 4 Fast New hosted reasoning model from xAI that's designed to be fast and extremely competitive on price. It has a 2 million token context window and "was trained end-to-end with tool-use reinforcement learning". It's priced at $0.20/million input tokens and $0.50/milli...

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Text • Daring Fireball Department of Commerce

[Sponsor] Dekáf Coffee Roasters

dekaf.com/df

Forget everything you think you know about decaf.

Nine single origins. Six signature blends. Four Mizudashi cold brews. All micro-lot and top-rated coffees shipped to you within 24 hours of roasting. No shortcuts. No crash. This is coffee at its most refined, just without the caffeine.

20% off for DF readers with code “DF” at dekaf.com.

We’re betting you’ll never look at decaf the same way again. But that’s kind of the point.

Link: dekaf.com/df

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Quoting Leaked Amazon memo

Amazonians, We've reviewed the Presidential Proclamation on H-1B visas that was released today and are actively working to gain greater clarity. Here's what you need to know right now: The proclamation creates a travel restriction starting September 21, 2025, at 12:01 a.m. ...

kottke.org Valid
Text • Jason Kottke

I’m usually pretty go-with-the-flow as far as OS updates go, but iOS...

I’m usually pretty go-with-the-flow as far as OS updates go, but iOS 26 / Liquid Glass is terrible: incoherent, ugly, and difficult to use. Obviously a massive design effort, but they missed the mark IMO.

💬 Join the discussion on kottke.org →

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httpjail

httpjail Here's a promising new (experimental) project in the sandboxing space from Ammar Bandukwala at Coder. httpjail provides a Rust CLI tool for running an individual process against a custom configured HTTP proxy. The initial goal is to help run coding agents like Claud...

kottke.org Valid
Text • Jason Kottke

Physics of Fluids journal article: ‘Phase behavior of Cacio e Pepe sauce’....

Physics of Fluids journal article: ‘Phase behavior of Cacio e Pepe sauce’. The authors found the dish entered the “Mozzarella Phase” when starch concentrations (relative to cheese) dropped below 1%, “corresponding to an unpleasant and separated sauce”.

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Text • Jason Kottke

Matt Webb: “Gin & tonic was invented by the East India Company...

Matt Webb: “Gin & tonic was invented by the East India Company to keep its colonising army safe [from malaria] in India. Bet the covid vaccine would have been more popular if it got you drunk.”

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Text • Jason Kottke

A Brief History of The Flatiron Building

A photo of NYC’s Flatiron Building, taken in 1904 by Edward Steichen. Fun fact: the Flatiron Building was not so named because of its resemblance to a clothes iron. It was actually named after the building’s owner, Archibald W. Flatiron. Ok, not really. But *puts on mans...

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The Hidden Risk in Notion 3.0 AI Agents: Web Search Tool Abuse for Data Exfiltration

The Hidden Risk in Notion 3.0 AI Agents: Web Search Tool Abuse for Data Exfiltration Abi Raghuram reports that Notion 3.0, released yesterday, introduces new prompt injection data exfiltration vulnerabilities thanks to enabling lethal trifecta attacks. Abi's attack involves ...

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Magistral 1.2

Mistral quietly released two new models yesterday: Magistral Small 1.2 (Apache 2.0, 96.1 GB on Hugging Face) and Magistral Medium 1.2 (not open weights same as Mistral's other "medium" models.) Despite being described as "minor updates" to the Magistral 1.1 models these hav...

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Text • Jason Kottke

Inside the Top Secret Virgil Abloh Archive. For the first time, a...

Inside the Top Secret Virgil Abloh Archive. For the first time, a look into the fashion collection of the late Off-White and Louis Vuitton creative director.

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#481 – Norman Ohler: Hitler, Nazis, Drugs, WW2, Blitzkrieg, LSD, MKUltra & CIA

Norman Ohler is a historian and author of “Blitzed: Drugs in the Third Reich,” a book that investigates the role of psychoactive drugs, particularly stimulants such as methamphetamine, in the military history of World War II. It is a book that two legendary historians Ian Ke...

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Text • Jason Kottke

“AI developers haven’t figured out a way to train their models not...

“AI developers haven’t figured out a way to train their models not to scheme. That’s because such training could actually teach the model how to scheme even better to avoid being detected.” (The same is true for children.)

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Text • Jason Kottke

Damn Interesting celebrates its 20th birthday. “In 2005, YouTube, reddit, and Facebook...

Damn Interesting celebrates its 20th birthday. “In 2005, YouTube, reddit, and Facebook were all still wet and screaming infants.”

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