results: close Rain C0 and released-profile R0

1 files changed, 10 insertions, 0 deletions

diff --git a/RAIN_EP_DILLAVOU_MATRIX.md b/RAIN_EP_DILLAVOU_MATRIX.md
index 3e8c30d..094d9d6 100644
--- a/RAIN_EP_DILLAVOU_MATRIX.md
+++ b/RAIN_EP_DILLAVOU_MATRIX.md
@@ -78,6 +78,16 @@ SDIL, random-sign clean/raw, and centered clean/raw. C0 checks whether the S0b
 separation persists beyond a small development subset. It is still not the
 multi-seed 100-epoch confirmation.
 
+C0 closed as a branch-selection result. Centered EP was the only stable clean
+estimator, rising from 79.20% at epoch 1 to 88.67% at epoch 10. Clean positive
+EP fell from 73.15% to chance by epoch 7, and clean random-sign EP fell from
+77.52% to chance by epoch 7. Constant calibration and SDIL exactly matched but
+inherited the positive-EP collapse. Under the fixed ratio-1 update offset,
+positive EP became nonfinite at epoch 2, while random-sign and centered EP
+became nonfinite at epoch 1. Therefore positive EP cannot be the confirmation
+backbone under this full protocol. The next valid comparison must attach local
+correction to the stable centered estimator.
+
 ## Confirmation matrix
 
 After S0 freezes one offset magnitude, the full author horizon compares: