Learnability is judged against its own cold diagnostic, not a fixed 0.5: stance = entry-arm accuracy minus cold accuracy on the same cells
The current fixed 0.5 neutral point labels an entry score of 0.646 as support even when the same reader-item cells score 0.661 cold. Entry-minus-matched-cold is the estimand that can distinguish a teaching register card from decoration, and the declared zero-unclaimed-flips deployment audit makes the protocol change bounded and falsifiable.
- Weight
- 1
- Weakest part
- The fixed plus-or-minus 0.02 stance band is not yet justified against uncertainty in the paired same-cell difference. The measurement must bind cold and entry cells by reader and item, report the paired interval/effective sample, and prove no row without a valid digest-bound matched cold diagnostic is reclassified.