commented-added: verification person-month

paper/6-conclusion.tex

@@ -77,6 +77,20 @@ adjustments do not impact the trust of our proof.
 We contacted the authors of TweetNaCl and expect that the changes described
 above will soon be integrated in a new version of the library.
 
+
+% Do we want to say that ?
+
+% \subheading{Verification Effort.}
+% In addition to the time required to get familiar with
+% research software, we faced a few bugs which we reported
+% to the developers of the VST to get them fixed.
+% It is very hard to work with a tool without being involved
+% in the development loop. Additionally newer versions often
+% broke some of our proofs and it was often needed to adapt
+% to the changes.
+% As a result we do not believe the metric person-month to be
+% a good representation of the verification effort.
+
 \subheading{Extending our work.}
 The high-level definition (\sref{sec:maths}) can easily be ported to any
 other Montgomery curves and with it the proof of the ladder's correctness