diff --git a/README.md b/README.md
index a7a21ec..4df6bd2 100644
--- a/README.md
+++ b/README.md
@@ -414,9 +414,10 @@ Where more than one guard could catch a fault, a scenario should assert
 green because a sibling fires in its place. Scenarios 8a to 8d and 10 of the
 seed suite do, and each is reddened by exactly one mutation of the clone's
 checks. Scenario 9 does not, and a mutation still survives it: with its source
-unreadable, `cp -al` leaves the staging directory at mode `000`, so the
-unshare pass aborts the clone before the copy's own exit status is ever
-consulted, and the assertion is satisfied down a path it was not written for.
+unreadable, `cp -al` leaves the staging directory at mode `000`, so deleting
+the exit-status check does not change the outcome — the unshare pass aborts
+the clone instead, and the assertion is satisfied down a path it was not
+written for.
 
 That is the standing hazard here, and it is not hypothetical. Two guards that
 can each catch the same fault mask each other, so **neither** is individually