diff --git a/docs/architecture.md b/docs/architecture.md
index 0e92e6b..ae99d58 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -29,7 +29,7 @@ demo proves data-flow behaviour, not physical residency.
 
 
 
-## Sequence (the 8-step round trip)
+## Flow (ASCII fallback)