diff --git a/submission_thesis/appendixes/detailed_analysis.tex b/submission_thesis/appendixes/detailed_analysis.tex
index 72018af..d9339f3 100644
--- a/submission_thesis/appendixes/detailed_analysis.tex
+++ b/submission_thesis/appendixes/detailed_analysis.tex
@@ -663,7 +663,16 @@ $$
     fm(Get\_Temperature) = \{ Pt100\_out\_of\_range, temp\_incorrect   \} .
 $$
 
-
+%%% NOT sure I should leave this in
+FC4: presents an interesting dilemma. 
+The {\fm}, Pt100:VAL\_ERR, could cause an out of range error, but may  
+cause  an  incorrect   temperature  reading.
+An out of range error, has less consequences than an incorrect reading, because
+an out of range error is detectable.
+Because FMMD forces the analyst to choose only one symptom to tie the {\fm} to,
+the worst, or most dangerous possible
+symptom must be chosen.
+