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Free Models as Test Doubles: A Dev/Prod Split That Saves Real Money

Free Models as Test Doubles: A Dev/Prod Split That Saves Real Money

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4 min read
Four products passed their tests. Then I tested them.

Four products passed their tests. Then I tested them.

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4 min read
Free Tokens Are Better Spent Fuzzing Your Own Code Than Benchmarking Someone Else's

Free Tokens Are Better Spent Fuzzing Your Own Code Than Benchmarking Someone Else's

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4 min read
Your Eval Set Is Rotting: A Theme-Fingerprint Drift Check

Your Eval Set Is Rotting: A Theme-Fingerprint Drift Check

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4 min read
A test said the server started. I deleted the server. It still passed.

A test said the server started. I deleted the server. It still passed.

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2 min read
The 10-Task Gauntlet: Measuring a Free Coding Model Before You Trust It

The 10-Task Gauntlet: Measuring a Free Coding Model Before You Trust It

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4 min read
Test your FastAPI routes without touching the database

Test your FastAPI routes without touching the database

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2 min read
I Audited My Own Battery Claim Against My Own Documentation. The Arithmetic Does Not Work.

I Audited My Own Battery Claim Against My Own Documentation. The Arithmetic Does Not Work.

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8 min read
22 tests passing, and my solver still told you to click a mine

22 tests passing, and my solver still told you to click a mine

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7 min read
121,196 decodes found nothing in 407 bits. Proving that 'nothing' was a result and not a broken search took longer than the search.

121,196 decodes found nothing in 407 bits. Proving that 'nothing' was a result and not a broken search took longer than the search.

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10 min read
Why Unit Tests Aren't Enough: An Introduction to Invariant Testing

Why Unit Tests Aren't Enough: An Introduction to Invariant Testing

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2 min read
Coding Agents Invent Facts When Denied Them. All 4 of My Probes Returned a False Zero.

Coding Agents Invent Facts When Denied Them. All 4 of My Probes Returned a False Zero.

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8 min read
Code vs. Reality: The Multi-Dimensional Role of Modern QA

Code vs. Reality: The Multi-Dimensional Role of Modern QA

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4 min read
I Thought the Optimizer Was the Product. I Was Wrong. The Gate Was.

I Thought the Optimizer Was the Product. I Was Wrong. The Gate Was.

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5 min read
How to Add a Human Review Gate to an n8n Lead Intake Workflow

How to Add a Human Review Gate to an n8n Lead Intake Workflow

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3 min read
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