--- a/Promise.st	Sun Sep 08 00:56:52 2019 +0200
+++ b/Promise.st	Sun Sep 08 00:58:27 2019 +0200
@@ -42,7 +42,11 @@
 "
     When created, a promise will start to evaluate its block in the background,
     and promise to deliver the value of this computation, when asked
-    for it via #value. Promises can be used for background computations,
+    for it via #value. 
+    If an exception happens druing the block evaluate,
+    it will be delivered  to the value-consumer.
+
+    Promises can be used for background computations,
     which automatically block the user of the result when that result is needed,
     unless the computation finished in the meanwhile.