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Pre-Signed: How a Brewery Automation System Fooled Itself

Season 1 Episode 324 Published 2 weeks, 1 day ago
Description
A brewery automation project uses a review template with the critical 'approved' line already pre-filled. The automated gate checks for this phrase and marks specs as complete without verifying actual human review. An adversarial reviewer on the seventh round of checking the checker itself discovers the flaw. 00:00:00 - The pre-signed permission slip: when approval comes before review 00:03:15 - Inside Bruce's brewery automation project 00:07:00 - The template trap: a blank form with the answer filled in 00:11:00 - The gate's rubber stamp: how it missed its own flaw 00:14:30 - The adversarial reviewer catches it on round seven 00:17:00 - Why checkers need checking: controls meet AI --- Sources & further reading: • All internal; read 2026-09-24. BrewSys master at bf60802 unless noted. • BrewSys/docs/podcast/LEARNING-CONTEXT.md §1, "Who did what", "The workflow (decision 0001)" • "Don't say" (bf60802) • BrewSys/docs/decisions/0001-agentic-workflow.md • BrewSys/docs/LOOP.md • BrewSys/docs/CONVENTIONS.md ([gate] rules, "What the gate does not see", product boundaries) • BrewSys/tools/gate.py, BrewSys/.githooks/pre-commit, BrewSys/tests/test_gate.py • BrewSys/.claude/agents/adversarial-reviewer.md • BrewSys/docs/specs/_template/review.md (before and after 2dc79b2) • git log --oneline master: 57e3688 (gate added), 0438379, d0608a5, f0ae8cf, 75c9dc3, 5d52ac4 • b506c16, 2dc79b2 (review rounds 1–7) • BrewSys/.context/reviews/restructure/1.md (gitignored local review log; rounds 1–8) • BrewSys/STATUS.md on branch b-001-aoi-udt (a97533a): "first watched run; no unattended loop" • [series] data/series/industrial-controls/ep-05-the-spec-is-the-product.md, ep-06-... • [callback] data/series/ml-volleyball/ep-12-the-gate-that-random-numbers-would-have-passed.md This podcast episode was fully generated by AI — research, script, voices, and production. Built with Claude, Piper TTS, and automated pipeline tooling.
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