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Mirror, Mirror 2021: Reflecting Poorly
The United States trails far behind other high-income countries on measures of health care affordability, administrative efficiency, equity, and outcomes.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 4,916 posts.
722
The Rule of Least Power
Copyright © 2006 W3C ® ( MIT , INRIA , Keio ), All Rights Reserved. W3C liability , trademark , document use , and software licensing rules apply.
723
Principles of Design
Again and again we fall back on the folklore of the principles of good design. Sometimes I need a URI for them so this is started as collection of them. I have written about some in many places. Principles such as simplicity and modularity are the stuff of software engineering; decentralization and tolerance are the…
724
What the data says about gun deaths in the U.S.
The number of gun deaths in the U.S. fell for the third consecutive year in 2024 but remained among the highest annual totals on record.
725
Idea to Paying Customers in 7 Weeks: How We Did It
Learn how paying customers in 7 days became an idea. This post is an overview the idea to paying customers in 7 weeks and how we did it.
726
Announcing the first SHA-1 collision
Posted by Marc Stevens (CWI Amsterdam), Elie Bursztein (Google), Pierre Karpman (CWI Amsterdam), Ange Albertini (Google), Yarik Markov (Goog...
727
My AI skeptic friends are all nuts
My smartest friends have bananas arguments about LLM coding.
728
It’s Time to Build
Every Western institution was unprepared for the coronavirus pandemic, despite many prior warnings. This monumental failure of institutional effectiveness will reverberate for the rest of the decade, but it’s not too early to ask why, and what we need to do about it. Many of us would like to pin the cause on one…
729
Security advisory: Critical remote code execution vulnerabilities, update now
PHP is a popular general-purpose scripting language that powers everything from your blog to the most popular websites in the world.
730
Cloudflare outage on November 18, 2025 post mortem
Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected.
731
NSO group iPhone zero-click, zero-day exploit captured in the wild
Citizen Lab found an actively exploited zero-click vulnerability being used to deliver NSO Group’s Pegasus mercenary spyware while checking the device of an individual employed by a Washington DC-based civil society organization with international offices. We refer to the exploit chain as BLASTPASS. The exploit chain…
732
An OpenAI model has disproved a central conjecture in discrete geometry
An OpenAI model solved the 80-year-old unit distance problem, disproving a major conjecture in discrete geometry and marking a milestone in AI-driven mathematics.
733
Understanding how Facebook disappeared from the internet
Today at 1651 UTC, we opened an internal incident entitled "Facebook DNS lookup returning SERVFAIL" because we were worried that something was wrong with our DNS resolver 1.1.1.1. But as we were about to post on our public status page we realized something else more serious was going on.
734
LastPass autofill exploit
Mathias Karlsson decided to check out the security of the LastPass browser extensions. Here's what he found.
735
Firefox’s new streaming and tiering compiler
People call WebAssembly a game changer because it makes it possible to run code on the web faster. Some speedups are already present, and some are yet to come. With ...
736
Calls between JavaScript and WebAssembly are finally fast
At Mozilla, we want WebAssembly to be as fast as it can be. This started with its design, which gives it great throughput. Then we improved load times with a ...
737
Local-first software (2019)
A new generation of collaborative software that allows users to retain ownership of their data.
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The path to ubiquitous AI (17k tokens/sec)
By Ljubisa Bajic Many believe AI is the real deal. In narrow domains, it already surpasses human performance. Used well, it is an unprecedented amplifier of human ingenuity and productivity. Its widespread adoption is hindered by two key barriers: high latency and astronomical cost. Interactions with language models…
740
Google supercharges machine learning tasks with TPU custom chip
Machine learning provides the underlying oomph to many of Google’s most-loved applications. In fact, more than 100 teams are currently using machine learning at Google today, from Street View, to Inbox Smart Reply, to voice search.
741
Chrome users beware: Manifest v3 is deceitful and threatening
Like FLoC and Privacy Sandbox before it, Google Chrome’s Manifest V3 is another example of the inherent conflict of interest that comes from Google controlling both the dominant web browser and one of the largest internet advertising networks.
742
Four kinds of documentation
Find the software documentation system for Divio. Includes comprehensive tutorials, how-to guides, technical reference and explanation. Learn more here.
743
OpenAI Five
Stay up to speed on the rapid advancement of AI technology and the benefits it offers to humanity.
744
Svelte 3: Rethinking Reactivity
It’s finally here
745
Hardening Firefox with Anthropic's Red Team
Claude Opus 4.6 found 22 Firefox vulnerabilities in two weeks, 14 rated high-severity, with proofs-of-concept and candidate patches for Mozilla.
746
Why was Roman concrete so durable?
Researchers have discovered ancient Roman concrete-manufacturing strategies that incorporated self-healing. Applying this knowledge toward modern cement production, they hope to improve the material’s environmental impact.
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748
D1: Our SQL database
Today, we’re excited to announce D1, Cloudflare’s first SQL database, designed for Cloudflare Workers
749
Sycophancy in GPT-4o
We have rolled back last week’s GPT‑4o update in ChatGPT so people are now using an earlier version with more balanced behavior. The update we removed was overly flattering or agreeable—often described as sycophantic.
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