results: identify state-dependent physical drift

1 files changed, 7 insertions, 0 deletions

diff --git a/TWO_STATE_BIAS_PROGRAM.md b/TWO_STATE_BIAS_PROGRAM.md
index b0df1b2..1020b11 100644
--- a/TWO_STATE_BIAS_PROGRAM.md
+++ b/TWO_STATE_BIAS_PROGRAM.md
@@ -290,6 +290,13 @@ Stop this paper direction if:
   `1.8374/1.7360/1.9468`; see `results/physical_bias/p0_summary.json`. This
   reproduces a nonzero rapid-switching error floor and an approximately
   constant low-period drift speed from real hardware. It is not an SDIL result.
+- Physical state-dependence diagnostic: complete. On held-out later portions of
+  the four released `DriftTests` traces, a per-edge affine field reduces
+  tangential-velocity RMSE to `0.21/0.54` of a constant-bias model for the two
+  task pairs. The direction is unchanged when excluding the final
+  `30/50/80/100 mV` before the observed gate plateaus; see
+  `results/physical_bias/p0_state_dependence.json`. This establishes a measured
+  locally predictable component suitable for P1, not an SDIL learning result.
 - Dual Prop same-path confirmation: active/supporting, not a passed result.
 - EP/CpL adapters: not implemented under this bias model.
 - Current score for this new paper framing: 5/10 until P1 passes.