type in README

README.md

@@ -79,12 +79,12 @@ Running
 Unit Testing
 ------------
 There is a simple test driver in `src/unit-test.scm`. It emulates the
-appearance and disappearance of two faces every few minutes. It also
+appearance and disappearance of two faces every few seconds(!). It also
 emulates chat-start and chat-stop.  It does not need or use the regular
 face-tracker or vision system nor the chatbot.  If everything is
-working, the blender head should wak up, smile, react appropriately,
-and then fall asleep every 3-4 minutes.  This test runs in an infinite
-loop.
+working, the blender head should wake up, smile, react appropriately,
+and then fall asleep every 2 minutes or so.  This test runs in an
+infinite loop.
 
 
 GUI Requirements