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At some point it will become a strong competitive advantage to zag where others zig.

If you understand the codebase deeply and have trust in it can roll out changes quickly without manual testing you can run circles around the people scratching their heads wondering if this vibe coded 2,500 pull request is going to be the one that takes down the system for a day.

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Have you ever written significant changes by hand without testing?

Ive written many significant changes without manual testing by leaning heavily on well crafted automated tests, carefully honed type systems and clean architecture. These foundations serve as the bedrock of high quality applications I can move fast on.

IME vibe coding isnt just not capable of building these foundations, it actively chips away at them where they already exist. shrug

You can ask for tests.

sure i can get all sorts of very poor quality tests by asking for them

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