The Tor threat model is the most cited, least internalized part of Tor’s design. Section 3 of the 2004 USENIX paper draws the boundary in one paragraph: Tor defends against “an adv
The Git Object Model: How Git Actually Stores Your Code
Ask most engineers what Git is and you’ll get an answer built out of commands: branch, commit, merge, rebase, push. That’s the porcelain — the user-facing verbs bolted onto somethi
What Is “Attention” in AI? The Paper Behind ChatGPT
Every time you type a question into ChatGPT, Claude, or Gemini, you are using an idea from a single research paper published in 2017. It has a slightly cheeky title — “Attention Is
What Is Chromium? The Open-Source Engine Behind Chrome
Type a web address into Chrome, Edge, Brave, Opera, or Vivaldi, and you’re using browsers built by five different companies — yet under the hood, nearly all of them are running the
What Is a Container? The Idea That Powers Modern Software (and AI)
There’s a joke that has haunted software for decades. A developer finishes a program, it runs perfectly on their laptop, they hand it off — and it immediately breaks on the server.
How Tor Works: Onion Routing Explained for Engineers
Tor is a distributed system that solves one narrow, precisely stated problem: let a client reach a destination such that no single party on the path — not even the network’s own re
How Large Language Models Work: A Comprehensive Guide
Large language models — the technology behind ChatGPT, Claude, and Gemini — can feel like magic: you type a question, and a machine writes back in fluent, confident prose. But unde
How AI Learned to See: The AlexNet Moment, Explained
The story of how AI learned to see does not start with a robot opening its eyes. It starts with a contest, a pile of gaming graphics cards, and a few days in the summer of 2012 tha
What Is the Render Network? Idle GPUs, Explained
Right now, somewhere, a gaming PC is sitting on a desk doing nothing. Inside it is a graphics card capable of billions of calculations a second, and it’s spending the afternoon wai
What Is the Saga Pattern? All-or-Nothing Across Many Steps
Book a trip online and one click quietly kicks off a small chain of events: charge your card, reserve the hotel, hold the flight seat, book the rental car, email your confirmation.









