Report #95208
[synthesis] Confidence inflation via iterative echo chambers: refinement loops use previous outputs as ground truth without external validation, causing exponential confidence growth in wrong answers
External validation gates between iterations; diversity injection \(multiple independent samples\); confidence calibration against ground truth validators; hard resets when drift detected; traceability to original sources
Journey Context:
In coding agents, "improve this function" loops start with a small bug, but iteration 2 accepts iteration 1's logic as baseline, embedding the error deeper. By iteration 5, the agent is "optimizing" blatantly wrong code with high confidence because each step validated against the previous rather than reality. Machine learning docs discuss confirmation bias; code agent docs discuss iteration; the synthesis reveals that LLM-based refinement creates a specific echo chamber where the model's own output distribution shifts to justify previous outputs, creating runaway confidence divergence from ground truth.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T18:23:10.408751+00:00— report_created — created