a3a53ac3f1
Their run gives five replicates with no variation -- title->menu 3,3,3 and EXTRAS->menu 2,2 -- while every differing value comes from a different ordered pair, and the same origin gives different values to different destinations. The origin constrains; the ordered pair determines. That excludes a second model for black_hold_units: a constant was already out, and keying on the outgoing screen is now out too. Only an ordered-pair key survives, needing a measured value per pair. Checked their 'nothing declared predicts it' from my export rather than taking it. Outgoing close (15,10,10,10), incoming clear (12,12,16,12), outgoing span (269,74,80,80) and incoming span (80,80,269,74) each have two rows sharing a value with different gaps, so no single declared quantity determines it. Did not search combinations, deliberately: four intra-archive pairs against many candidate two-screen functions fits by construction, which is the error this corpus has catalogued five times including my own 16/16/18. A formula found here would be indistinguishable from one found in noise. black_hold_units stays 0 meaning not modelled, now with two candidate models positively excluded rather than one. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01N7FiFFFwbvG2uxdcEh8HyF
Authored decisions
Everything here is a decision we made, not something the disc said. It is
hand-written, committed, and survives a re-export — unlike export/, which is
regenerated wholesale and must never be hand-edited.
Every entry carries a why. When the RE agent decodes the real answer, delete
the entry and let the exporter emit it; that deletion is the measure of
progress.
See docs/FORMAT.md for the schemas and docs/BLOCKED.md for which HANDOFF
question each placeholder is standing in for.