diff --git a/journal/journal.md b/journal/journal.md
index 182a27a3b0c136c9a6e64bd7da6429106dd8e40c..e10a5b66db4e651be5881b46a2281b305979a6cf 100644
--- a/journal/journal.md
+++ b/journal/journal.md
@@ -12,6 +12,15 @@ markdownguide.org
     - helpful for supervisor meetings
 - never edit old journal entries! 
 
+Exercise Malfunction:
+
+- discard successfull tries in data
+- divide by number of joints measured which is always 6 -> ?
+- only temperature dependant
+- independant joints
+- temperature doesn't play a role in data with neglecting successful runs
+- data is not a slope and slope is fitted :D
+
 ### Module 3
 
 ### Module 4