diff --git a/Simon-nofib-notes b/Simon-nofib-notes
index d6f75d5dc8360e21d3637d2dd762138ddc028775..785dba4e94345c85311c3949b4f4f97f1524f272 100644
--- a/Simon-nofib-notes
+++ b/Simon-nofib-notes
@@ -423,6 +423,11 @@ sorting
 ~~~~~~~
 Same issue with GHC.IO.Encoding.UTF8 as treejoin
 
+life
+~~~~
+The call to zipWith3 in row is quite close to the inlining threshold.
+Makes a difference of about 2% last time it flipped.
+
 
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 	Real suite