diff --git a/README.md b/README.md
index abeae52..a41cd79 100644
--- a/README.md
+++ b/README.md
@@ -1406,6 +1406,8 @@ XXX should we support generators as input?
     the other hand...
     ...not sure if it is possible/correct to control the flow upstream in a 
     promise chain...
+    ...might be a good idea to at least provide some means to control flow up
+    the chain, for instance to abort execution...
 XXX should we support infinite generators as input?
 -->