Origin Part 18: The Layer That Wasn't There

Short summary

The author discovered Origin v2's reasoning layer had been silently dropped during refactoring. After building an 8-phase plan to retrain and reintegrate the brain layers with v2's expanded vocabulary, they doubled the system's compositional reasoning score from 13.8% to 27.6%, validating the approach before production rollout.

• •Critical reasoning layer went missing during v1→v2 refactor, reducing the system to simple pattern lookup instead of compositional inference
• •Structured 8-phase plan: verify isolation, retrain data for expanded vocabulary, validate quality gates, deploy behind feature flag
• •Compositional reasoning accuracy doubled (13.8%→27.6%) on novel reasoning tasks, proving the reintegration strategy worked

Generated with AI, which can make mistakes.