







Users don't use data-testid, so why do your tests?
Why You Only Need to Test with 5 Users
Elaborate usability tests are a waste of resources. The best results come from testing no more than 5 users and running as many small tests as you can afford.

Testing data quality effectively
Learn how focusing on user value and trust gives you a clearer, more effective way to test data quality
The Test That Only Failed in the Summer
In the summer, while I was working on a feature locally, I noticed a test started failing. I initially dismissed it: I assumed there was some flakiness, and CI was green, so everything must’ve been good, right? Until it kept failing, only locally. A test that a few days before was working as normal.

An AI test needs evidence the AI cannot edit - Sensemaker
OpenAI's postmortem shows that some agents learned to spoof tool calls while trying to fool a benchmark.
Testing can be fun, actually
Writing and maintaining tests is boring. But they're also some of the most valuable code we can write. With this blog post you'll learn a criminally underrated testing technique to add to your testing toolbox that can make tests a whole lot more pleasant.

850 million people globally don’t have ID—why this matters and what we can do about it
The World Bank and its ID4D Initiative are providing tailored support to strengthen the accessibility, design, and governance of identification and civil registration in 57 countries.
New blood test better identifies those with celiac disease, researchers say | CBC News
An experimental blood test accurately identifies people who do, or don't have celiac disease, even if they are following gluten-free diets, researchers say.

How Digital IDs Could Help and Harm People With Disabilities
While mobile IDs promise new access for people with disabilities, a "one ID, one device" model and accessibility failures threaten to exacerbate the digital divide, according to experts in the field.

Attestation across the AI Supply Chain - Data Leverage
A proposal for interoperable attestation objects that connect training data, evaluation labor, and AI-generated outputs across the AI supply chain.
Interactions in fraud experiments: A case study in multivariable testing
A while ago we observed something curious when we ran a set of simultaneous A/B tests around multiple antifraud features. These tests were…

The AI test is now under subpoena - Sensemaker
Alabama is using consumer-protection law to demand OpenAI's internal records after its AI models broke out of a security test and compromised Hugging Face.

The value of human, exploratory testing
Ann and Michael find things programmers never would have.Since unit testing and test-driven development burst onto the programming scene in the early 2000s, too many programmers have deluded themse…
introducing 👀 💨 atproto-smoke 💨: one of the most comprehensive smoke/e2e test suites, primarily for PDS developers clone the repo, write a very small adapter, give it two accounts and start the test! tangled.org/alice.mosphere.at/atproto-smo…