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How to learn mathematics: the asterisk method
All original material on the geometry.org website is Copyright (C) 1999–2025, Alan U. Kennington.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 6,985 posts.
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Zero Cost Abstractions
The idea of a zero cost abstraction is very important to certain programming languages, like Rust and C++, which intend to enable users to write programs with excellent performance profiles with relatively little effort. Since this idea is fundamental to the design of Rust and my work, I want to investigate, for a…
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My Amazon S3 Mistake
DevFactor | Page are used for templating and causing DevFactor to be easily navigable
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You're Not Losing Fat Because You're Eating Too Damn Much (2016)
The environmental and cognitive factors at play that have people eating more without realising.
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Reverse Engineering the Hacker News Ranking Algorithm
A data-driven exploration of how the Hacker News ranking algorithm works.
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Farewell GitHub, Hello Immersive Computing
Today is my last day at GitHub. Recent events have given me a lot of time to reflect on what’s important to me, and I’ve decided to switch gears and focus on building something from scratch again. Since visiting the Oculus VR team at their office three months ago, I’ve come to believe that immersive computing (aka…
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First-party isolation in Firefox: what breaks if you enable it?
Firefox’s FPI system keeps websites from tracking your movements across websites. This gives excellent privacy protections but at a cost of web compatibility.
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Xkcd Password Generator
The button below will generate a random phrase consisting of four common words. According to yesterday’s xkcd strip, such phrases are hard to guess (even by brute force), …
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If PHP Were British
PHP, as the result of a spectacular error of judgement, appears to be written in US English. How do we developers ensure the traditions of the British Empire continue to be upheld, even in the digital age?
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How does Apple privately find offline devices?
At Monday’s WWDC conference, Apple announced a cool new feature called “Find My”. Unlike Apple’s “Find my iPhone”, which uses cellular communication and the lost…
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Software Below the Poverty Line
Open Source Freelancer
4424
The Waiting Time Paradox, Or, Why Is My Bus Always Late?
If you, like me, frequently commute via public transit, you may be familiar with the following situation:
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What killed the Linux desktop
Miguel de Icaza's Blog
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The weird Hewlett Packard FreeDOS option
In this installment: some strange things I discovered when purchasing a FreeDOS laptop from Hewlett Packard. I suspect that the audience for this will be somewhat limited but I had fun exploring this. Perhaps you, dear reader, will find a chuckle in here too.
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The Sound of Silence
I recently heard one of the more interesting insights about Silicon Valley I'd heard in a while. It explained something I’d wondered about for years. But I can't tell you what it was. There's too...
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Have I Been Pwned Is Now Partnering with 1Password
The penny first dropped for me just over 7 years ago to the day: The only secure password is the one you can't remember [https://www.troyhunt.com/only-secure-password-is-one-you-cant/]. In an era well before the birth of Have I Been Pwned [https://haveibeenpwned.
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Windows 8 — Disappointing Usability for Both Novice and Power Users
Hidden features, reduced discoverability, cognitive overhead from dual environments, and reduced power from a single-window UI and low information density. Too bad.
4430
Equifax Breach Fallout: Your Salary History
In May, KrebsOnSecurity broke a story about lax security at a payroll division of big-three credit bureau Equifax that let identity thieves access personal and financial data on an unknown number of Americans. Incredibly, this same division makes it simple to access detailed salary and employment history on a large…
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GPT-4 and professional benchmarks: the wrong answer to the wrong question
OpenAI may have tested on the training data. Besides, human benchmarks are meaningless for bots.
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I assume I'm below average
Derek Sivers official site. Thoughts on philosophy, culture, self-improvement. Author of Useful Not True, How to Live, Hell Yeah or No, Anything You Want.
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Poll on macOS 10.12 is broken
When Mac OS X first launched they did so without an existing poll function. They later added poll() in Mac OS X 10.3, but we quickly discovered that it was broken (it returned a non-zero value when asked to wait for nothing) so in the curl project we added a check in configure for that … Continue reading poll on mac…
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Forth: The programming language that writes itself
An exploration of the evolution and meaning of the Forth programming language and its context in history.
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Thoreau 2.0
This is a written version of a talk I gave on September 21, 2013 , at the XOXO conference in Portland.
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One Token to rule them all – Obtaining Global Admin in every Entra ID tenant
While preparing for my Black Hat and DEF CON talks in July of this year, I found the most impactful Entra ID vulnerability that I will probably ever find. One that could have allowed me to compromise every Entra ID tenant in the world (except probably those in national cloud deployments). If you are an Entra ID admin…