diff --git a/specs/InnerLoop.md b/specs/InnerLoop.md
index 2f28a68..38c14a8 100644
--- a/specs/InnerLoop.md
+++ b/specs/InnerLoop.md
@@ -46,10 +46,29 @@ are never skipped for code-producing work.
 | **M** | Survey and ADR merged into one document; review optional | Touches a canonical interface, or adds/updates an external dependency |
 | **S** | One provenance paragraph in the commit message | Everything else (utilities, fixes, refactors inside a boundary) |
 
-**The chaos roll.** After deriving the structural tier, roll d10
-(`shuf -i 1-10 -n 1`). On a **10**, the tier is instead picked uniformly at
+**The chaos roll.** After deriving the structural tier, roll **d4**
+(`shuf -i 1-4 -n 1`). On a **4**, the tier is instead picked uniformly at
 random (`shuf -e S M L -n 1`), overriding the structural derivation — up or
-down. Both rolls are recorded in the tier declaration
+down.
+
+> **Calibration window, opened 2026-07-31 (CB-WP-0003 T06).** The rate was
+> d10 and the mechanism **never fired**: two rolls across two workplans
+> (CB-WP-0001: 9, CB-WP-0002: 2), against ~0.2 expected firings. At d10 and
+> ~2 tier decisions per workplan it would take roughly twenty workplans to
+> observe four overrides, so the mechanism was set at a rate that prevented
+> its own evaluation — the one option T06 ruled out.
+>
+> Raised to **d4 (25%) for the next 12 tier declarations**, then evaluated
+> and either kept, returned to d10, or deleted. Expected ~3 firings in the
+> window, which is enough to see whether an overridden tier produces a
+> different outcome than the argued one.
+>
+> **Stated cost:** a chaos-L override on work that would have been S buys a
+> full survey, adversarial review, and ADR. Measured comparable: CB-WP-0001
+> T03 (a tier-L survey) cost **$9.91**. At 25% over 12 declarations the
+> window is expected to cost **$20–30**. That is the price of finding out
+> whether the mechanism is worth keeping, and it is cheaper than carrying an
+> unevaluated ritual indefinitely. Both rolls are recorded in the tier declaration
 (`tier: M (structural L, chaos 10→M)`). **Record the roll every time,
 including when it changes nothing** (`tier: L (structural L, chaos 4)`),
 so a mechanism that never fires is visible rather than assumed. Purpose:
diff --git a/workplans/CB-WP-0003-loop-hardening.md b/workplans/CB-WP-0003-loop-hardening.md
index 0db2942..c0b41ce 100644
--- a/workplans/CB-WP-0003-loop-hardening.md
+++ b/workplans/CB-WP-0003-loop-hardening.md
@@ -234,7 +234,7 @@ Unblocked: depends on CB-WP-0002, now complete.
 
 ```task
 id: CB-WP-0003-T06
-status: todo
+status: done
 priority: low
 state_hub_task_id: "8f3a6147-54e8-48f9-8543-c13b0e0b0278"
 ```