diff --git a/examples/causal_pipeline.rs b/examples/causal_pipeline.rs
index b06db8b..f50ae5f 100644
--- a/examples/causal_pipeline.rs
+++ b/examples/causal_pipeline.rs
@@ -30,6 +30,16 @@
 //!                    at baseline and reports the unguarded per-item
 //!                    overhead δ plus the impact ceiling it implies.
 //!
+//! Result (24-core run, 2026-07-13, job f9305cbb): δ measured 0.3µs/item —
+//! 0.1% of the serialized path — and `wide` does not move the @50% cell
+//! (+83.5/+86.3 vs work's +81.5/+86.7). This demo's +84-vs-+100 @50%
+//! shortfall is therefore NOT unguarded stage time; it is controller-side:
+//! injected delay reaches ~327ms of the ideal 350ms over the 700ms window,
+//! plus a ~3% real-throughput dip while experiments run. Contrast urus's
+//! causal_bench, where the same arithmetic identified a real ~70µs/request
+//! unguarded remainder (recv/reply outside the store guard). Sites measure
+//! what they wrap — and the occupancy probe tells you which case you're in.
+//!
 //! Prints a summary, writes `profile.coz` (Coz plot-compatible), and — given
 //! enough cores for the pipeline to actually run in parallel — checks the
 //! expected separation and exits nonzero if it doesn't hold, so a CI box can