Section 076 · Chapter 10, Anti-Patterns That Create False Confidence

Anti-Patterns: The Whack-a-Mole Tuning Trap

Prompt patches and fine-tunes can remove one visible failure while creating quieter failures nearby.

retrievalfine-tuningwhack mole tuning trap

What to do

  1. Define runnable checks that exercise retrieval, fine-tuning, and whack mole tuning trap.
  2. Set acceptable outcomes and blocker failures for retrieval, fine-tuning, and whack mole tuning trap before running the evaluation.
  3. Run representative cases for retrieval, fine-tuning, and whack mole tuning trap and preserve the failures that would change the decision.

Evidence to preserve

  • Include the original failure, nearby cases, counterexamples, slices, and known regressions.
  • Preserve the inputs, versions, configurations, raw outcomes, and results for retrieval, fine-tuning, whack mole tuning trap needed to reproduce work on Anti-Patterns: The Whack-a-Mole Tuning Trap.
  • Report results for retrieval, fine-tuning, whack mole tuning trap by relevant slice, separate blocker failures from averages, state uncertainty and blind spots, and connect the result to a release decision.

Expert note

At scale, every tuning change should have a blast-radius eval: original failures, adjacent prompts, benign counterexamples, slice checks, cost and latency metrics, and holdout confirmation.

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Cite this page

Jason Arbon. "Anti-Patterns: The Whack-a-Mole Tuning Trap." Testing AI Knowledge Edition, section 76.

https://jarbon.ai/testing-ai/knowledge/ch076-whack-mole-tuning-trap.html

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