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My Lethal Trifecta talk at the Bay Area AI Security Meetup
I gave a talk on Wednesday at the Bay Area AI Security Meetup about prompt injection, the lethal trifecta and the challenges of securing systems that use MCP. It wasn’t …
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The latest blog posts to take off on Hacker News. 80,834 posts.
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MCP overlooks hard-won lessons from distributed systems
Fool me once, shame on you; fool me twice, shame on me.
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OpenFreeMap survived 100k requests per second
I was about to post about how nice the last 10 months of OpenFreeMap have been. The architecture has really proven itself to be great, Cloudflare has agreed to sponsor the bandwidth, Hetzner servers are super stable as always, serving tiles
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Long-term exposure to outdoor air pollution linked to increased risk of dementia
An analysis of studies incorporating data from almost 30 million people has highlighted the role that air pollution – including that coming from car exhaust emissions – plays in increased risk of dementia.
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Ratfactor's illustrated guide to folding fitted sheets
Note to the impatient: You can just scroll down to the drawings of fitted sheets being folded. You won’t hurt my feelings. (I’ll never even know.) But you may want to bookmark this page for later instead. You can get fast at folding fitted sheets. But to learn how to fold fitted sheets is going to take some patience…
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Did California's fast food minimum wage reduce employment?
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.
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An engineer's perspective on hiring
hiring in tech is broken and everyone knows it. what can we do better?
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Partially Matching Zig Enums
A short post about a neat little Zig idiom. Consider your average {sum type, variant, tagged union, enum, alt}:
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Let's properly analyze an AI article for once
Recently the CEO of Github wrote a blog post called Developers reinvented . It was reposted with various clickbait headings like GitHub CEO...
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Undefined Behavior in C and C++ (2024)
In some ways, that's because C is a lower-level language, closer to assembly; it just gives you what the underlying machine gives you.
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Our European search index goes live
We’ve started delivering independent search results from our European-based index. This will help us build the kind of ethical and fair internet we believe in.
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The Framework Desktop is a beast
I've been running the Framework Desktop for a few months here in Copenhagen now. It's an incredible machine. It's completely quiet, even under heavy, stress-all-cores load. It's tiny too, at just 4.5L of volume, especially compared to my old beautiful but bulky North tower running the 7950X — yet it's faster! And…
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Build durable workflows with Postgres
In this blog post, we’ll dive deep into why we chose to build DBOS durable workflow execution on the PostgreSQL DBMS.
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I want everything local – Building my offline AI workspace
Building a completely offline AI workspace with local LLMs, sandboxed code execution, and browser automation — no cloud dependencies, maximum privacy.
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The surprise deprecation of GPT-4o for ChatGPT consumers
I’ve been dipping into the r/ChatGPT subreddit recently to see how people are reacting to the GPT-5 launch, and so far the vibes there are not good. This AMA thread …
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A message from Intel CEO Lip-Bu Tan to all company employees
A message from Intel CEO Lip-Bu Tan to all company employees.
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Open SWE: An open-source asynchronous coding agent
Open SWE is an open-source, cloud-hosted coding agent that autonomously handles GitHub tasks—planning, coding, testing, and opening PRs.
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GPT-5 vs. Sonnet: Complex Agentic Coding
OpenAI released GPT-5 yesterday, promoting it as their best model yet for agentic coding.
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Why tail-recursive functions are loops
One story every computing enthusiast should hear is the lesson ofhow loops and tail-recursion are equivalent. We like recursivefunctions because they’re amen...
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AI must RTFM: Why tech writers are becoming context curators
I’ve been noticing a trend among developers that use AI: they are increasingly writing and structuring docs in context …
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AI is impressive because we've failed at personal computing
AI is impressive because we’ve failed at semantic web and personal computing | exotext
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Google's Genie is more impressive than GPT5
It was a busy week in the AI world.
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Getting good results from Claude Code
An updated version of my user-level CLAUDE.md is featured in this post from December 2, 2025. I've been experimenting with LLM programming agents over the past few months. Claude Code has become my favorite. It is not without issues, but it's allowed me to write ~12 programs/projects in
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How we replaced Elasticsearch and MongoDB with Rust and RocksDB
Radar offers geocoding, place search, and fraud detection APIs, powered by HorizonDB, a Rust-based engine delivering 20k QPS and sub-millisecond latency.
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Food, housing, & health care costs are a source of major stress for many people
About half the public identify the cost of groceries as a major source of financial stress. Nearly 1 in 5 of them have used so-called Buy Now Play Later services to buy their groceries.
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How attention sinks keep language models stable
We discovered why language models catastrophically fail on long conversations: when old tokens are removed to save memory, models produce complete gibberish. We found models dump massive attention onto the first few tokens as "attention sinks"—places to park unused attention since softmax requires weights to sum to 1…
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Linear sent me down a local-first rabbit hole
A deep dive into local-first architecture, triggered by wondering why Linear feels so fast. Looking at the technical implementation, exploring tools like Jazz and Electric SQL, and explaining why my next app might not need API endpoints.
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Cursed Knowledge
Cursed knowledge we have learned as a result of building Immich that we wish we never knew.
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