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Interval Calculator
What is this?
This is a calculator that works over unions of intervals rather than just real numbers. It is an implementation of Interval Union Arithmetic.
An interval [a, b]
represents the set of all
numbers between and including a and b. An interval union:
[a, b] U [c, d]
is a disjoint set of
inte...
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The electromechanical angle computer inside the B-52 bomber's star tracker
Before GPS, how did aircraft navigate? One important technique was celestial navigation: navigating from the positions of the stars, planets, or the sun. While celestial navigation is accurate, cannot be jammed, and doesn't require any broadcast infrastructure, it is a difficult and time-consuming p...
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Bayesian statistics for confused data scientists
Bayesian statistics for confused data scientists
It’s the third time I’ve fallen into the Bayesian rabbit hole. It always goes like this: I find some cool article about it, it feels like magic, whoever is writing about it is probably a little smug about how much cooler than frequentism it is (and I ...
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Autoresearch on an old research idea | Blog | Yogesh Kumar
Autoresearch on an old research idea
Ever since it showed up on my GH feed, Karpathy’s Autoresearch was rattling around in the back of my mind. I wanted to try it on a research problem I fully understood. So this weekend, I picked up my old research code from eCLIP , dusted it off the legacy depende...
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A Survey of the 7 Configuration Changes That Turn a Multi-homed Linux Host into a Switch/Router
This was written on March 1, 2026
What does it mean to turn a Linux system into networking infrastructure?
I think it is incredibly cool that we can change a Linux system into a networking device. But have you ever wondered:
What are we changing when we turn a Linux system into a router or switch? W...
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The Future of Everything is Lies, I Guess
Table of Contents
This is a long article, so I've broken it up into a series of posts, listed below. You can also read the full work as a PDF or EPUB.
This is a weird time to be alive.
I grew up on Asimov and Clarke, watching Star Trek and dreaming of intelligent machines. My dad’s library was full ...
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Keeping a Postgres queue healthy — PlanetScale
Keeping a Postgres queue healthy
Simeon Griggs [@simeonGriggs] |
A healthy digestive system is one that efficiently eliminates waste. Fiber is a key part of a healthy diet, not because it is nutritious, but because it keeps everything you consume moving.
Databases are not so different. If you want a...
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Do You Even Need a Database? - DB Pro Blog
Do You Even Need a Database?
A database is just files. SQLite is a single file on disk. PostgreSQL is a directory of files with a process sitting in front of them. Every database you have ever used reads and writes to the filesystem, exactly like your code does when it calls open()
.
So the question...
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We gave an AI a 3 year retail lease in SF and asked it to make a profit | Andon Labs
At Andon Labs, we have been deploying AI agents into the real world, giving them real tools and real money and documenting the consequences. You may know us as the creators of Claudius, the AI running a vending machine at Anthropic’s office. But frontier models have become really good, and running v...
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The Economics of Software Teams: Why Most Engineering Organizations Are Flying Blind
The Economics of Software Teams: Why Most Organizations Are Flying Blind
This post works through the financial logic of software teams, from what a team of eight engineers actually costs per month to what it needs to generate to be economically viable. It also examines why most teams have no visibil...
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LESSWRONG
TLDR: A complete guide to juggling, from zero to siteswap notation, by someone who juggles in nightclubs.
I take my juggling balls with me wherever I go. Train stations. Airports. Nightclubs. You name a place I've been, and there's a decent chance I've juggled there. When I'm bored, I just whip out ...
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Your File System Is Already a Graph Database
Your File System Is Already a Graph Database
Karpathy recently posted about using LLMs to build personal knowledge bases — collecting raw sources into a directory, having an LLM “compile” them into a wiki of interlinked markdown files, and viewing the whole thing in Obsidian. He followed it up with ...
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Good Taste the Only Real Moat Left
Good Taste the Only Real Moat Left
AI and LLMs have changed one thing very quickly: competent output is now cheap.
A landing page can be generated in minutes. A product memo can appear in a single prompt. A pitch deck can look polished before anyone has done the hard work of deciding what the compan...
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Running Google Gemma 4 Locally With LM Studio’s New Headless CLI & Claude Code
Running Google Gemma 4 Locally With LM Studio’s New Headless CLI & Claude Code
LM Studio 0.4.0 introduced llmster and the lms CLI. Here is how I set up Gemma 4 26B for local inference on macOS that can be used with Claude Code.
Why run models locally?
Cloud AI APIs are great until they are not. Rate...
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The machines are fine. I'm worried about us.
The machines are fine. I'm worried about us.
Imagine you're a new assistant professor at a research university. You just got the job, you just got a small pot of startup funding, and you just hired your first two PhD students: Alice and Bob. You're in astrophysics. This is the beginning of everythin...
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Shooting Down Ideas Is Not a Skill — Scott Lawson
Shooting Down Ideas Is Not a Skill
Someone proposes an idea in a meeting. It's new, it's different, and it would take effort. Before they've finished explaining it, three people have already thought of reasons it won't work.
"I haven't heard any customers request this." "We can't use Python for that...
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From data to Viz | Find the graphic you need
Stacked Area
A stacked version of the area chart to compare several groups.
About
A stacked area chart is the extension of a basic area chart which displays the evolution of the value of several groups on the same graphic. The values of each group are displayed on top of each other, what allows to c...
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Modern SQLite: Features You Didn’t Know It Had
Modern SQLite: Features You Didn’t Know It Had
Working with JSON data
SQLite ships with a JSON extension that lets you store and query JSON documents directly in tables. You can keep your schema flexible while still using SQL to slice and dice structured data.
Example: extracting fields from a JSON ...
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How to turn anything into a router
How to turn anything into a router
I don’t like to cover “current events” very much, but the American government just revealed a truly bewildering policy effectively banning import of new consumer router models. This is ridiculous for many reasons, but if this does indeed come to pass it may be bene...
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I Traced My Traffic Through a Home Tailscale Exit Node
I set up Tailscale years ago but only used it for “reach my own devices” use cases. This week I finally set up a proper home exit node: a tiny dedicated LXC on my Proxmox box (1 vCPU, 512 MB RAM, basically just Tailscale).
To verify it worked, I pinged my home servers and they worked. But I wanted t...
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