Dex Horthy says agentic software factories fail when nobody reads the code
AI Engineer · youtube · 2026-07-24
Dex Horthy argues that “harness engineering” is not enough for agentic software factories: if nobody reads the code, outages and review quality eventually collapse the system.
His thesis is that the problem is not prompting or scale, but training. Coding models are rewarded for passing tests, not for preserving architecture or maintainability, so they get better at short-term correctness without learning long-term code quality.
The recommended fix is to “turn the lights back on”: do product review and system design up front, spell out types and call graphs, then build vertical slices. According to Horthy, 30 minutes of alignment can save hours of cleanup, and a good PR should be readable rather than something to untangle later.
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