diff --git a/os2.rkt b/os2.rkt
index 4b6ddaa..f27583e 100644
--- a/os2.rkt
+++ b/os2.rkt
@@ -202,7 +202,12 @@
   ;;        - remove the topic from flow-topics for the flow
   ;;        - if no topics remain for the flow,
   ;;           - dualize it using our source topic
-  ;;           - ...??
+  ;;           - remember it may have virtual duals ???
+  ;;           - for each dual,
+  ;;              - if it has NONE of its own duals left,
+  ;;                 - 
+  ;; OK at this point this is getting far too complex.
+  ;; Back to TSTTCPW: O(n^2) full-table-scans.
 
 (define (route-and-deliver message-topic body state)
   (define endpoints