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Nine Bugs in My Own Evaluation Harness. Every One Made My Results Look Better.

Nine Bugs in My Own Evaluation Harness. Every One Made My Results Look Better.

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Comments 26
6 min read
My benchmark harness was wrong fourteen ways before it measured anything

Exposes hidden flaws in benchmarking

My benchmark harness was wrong fourteen ways before it measured anything

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Comments 10
9 min read
Exclusion Lists Managed by Name Always Rot. Mark the Population Instead.

Exclusion Lists Managed by Name Always Rot. Mark the Population Instead.

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Comments
7 min read
The Chat Log Is Not git status: Five Agent Myths

The Chat Log Is Not git status: Five Agent Myths

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Comments 1
7 min read
Add a Cost Axis Before You Trust an Agent Score

Add a Cost Axis Before You Trust an Agent Score

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Comments 3
5 min read
My script typed 4,953 characters into an editor and produced a text I could not publish

My script typed 4,953 characters into an editor and produced a text I could not publish

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Comments
3 min read
Designing a compliance check that does not cry wolf in CI

Designing a compliance check that does not cry wolf in CI

Comments 3
8 min read
Eval-First RAG: Use Separate Scores to Triage Failures

Eval-First RAG: Use Separate Scores to Triage Failures

Comments 1
5 min read
100% line coverage did not catch the one bug that mattered

100% line coverage did not catch the one bug that mattered

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Comments
6 min read
How I Built a Verifier Engine That Catches AI Agents Lying About What They Did

How I Built a Verifier Engine That Catches AI Agents Lying About What They Did

Comments 4
6 min read
What if API testing worked like Terraform? (An experiment in Go)

What if API testing worked like Terraform? (An experiment in Go)

Comments 4
1 min read
Every agent on my team passed its own tests. The team still shipped wrong answers.

Every agent on my team passed its own tests. The team still shipped wrong answers.

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Comments 2
4 min read
How We Test Mobile Web Performance on Real Android and iPhone Devices

How We Test Mobile Web Performance on Real Android and iPhone Devices

Comments
4 min read
Passing locally proves nothing: four ways production disagreed in one week

Passing locally proves nothing: four ways production disagreed in one week

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Comments
4 min read
The bug your test suite can't have: a test you never wrote

The bug your test suite can't have: a test you never wrote

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Comments 4
3 min read
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