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Healthcare RAG: Test the Claim-to-Source Contract

Healthcare RAG: Test the Claim-to-Source Contract

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14 min read
Why Your Playwright Tests Randomly Fail on CI and How to Fix It

Why Your Playwright Tests Randomly Fail on CI and How to Fix It

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3 min read
A rollback plan needs a detection plan

A rollback plan needs a detection plan

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4 min read
"Unknown" was the right third value. It is not enough on its own.

"Unknown" was the right third value. It is not enough on its own.

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6 min read
Testing a level pack you did not write

Testing a level pack you did not write

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7 min read
Golden Trace: The Eval Anchor Most Teams Skip

Golden Trace: The Eval Anchor Most Teams Skip

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4 min read
My demo videos found 5 bugs my tests didn't: 13-language product demos from real screenshots

My demo videos found 5 bugs my tests didn't: 13-language product demos from real screenshots

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4 min read
I wrote five agents to cheat my own benchmark. They found three holes. Three more found me.

I wrote five agents to cheat my own benchmark. They found three holes. Three more found me.

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12 min read
Your A/B testing tool and your analytics will never agree, and that is fine

Your A/B testing tool and your analytics will never agree, and that is fine

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3 min read
Implementing Validated Mental Health Screeners (Like PHQ-9) on the Web: Scoring, Severity Bands and Safety Rules

Implementing Validated Mental Health Screeners (Like PHQ-9) on the Web: Scoring, Severity Bands and Safety Rules

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3 min read
Calculators Should Show Their Work: Lessons From Building 91 Formula-First Tools in 6 Languages

Calculators Should Show Their Work: Lessons From Building 91 Formula-First Tools in 6 Languages

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3 min read
Testing bots without spamming chats: Mocking & enterprise test patterns.

Testing bots without spamming chats: Mocking & enterprise test patterns.

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1 min read
The check that passed while broken

The check that passed while broken

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4 min read
A Hexagonal Aperture Would Break Every Diffuse Surface in My Renderer

A Hexagonal Aperture Would Break Every Diffuse Surface in My Renderer

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10 min read
Your Own Browser Is the Worst Instrument You Own for Testing Your Own Site

Your Own Browser Is the Worst Instrument You Own for Testing Your Own Site

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3 min read
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