diff --git a/pub/proposal/proposal.pdf b/pub/proposal/proposal.pdf
index 7743435..e405b08 100644
Binary files a/pub/proposal/proposal.pdf and b/pub/proposal/proposal.pdf differ
diff --git a/pub/proposal/proposal.tex b/pub/proposal/proposal.tex
index 9acb44b..8c22167 100644
--- a/pub/proposal/proposal.tex
+++ b/pub/proposal/proposal.tex
@@ -52,7 +52,9 @@
 \begin{itemize}
     \item Designing Emergency Checklists is difficult
     \item Procedures in checklists must be tested in simulators~\cite{nasa-design},
-      which usually means trained pilots test it
+      which usually means trained pilots test it, as the tests need
+      to work consistently~\cite{manifesto} (making sure it's not lengthy,
+      concicse and gets critical procedures)
       	\lfcomment{Testing for what? What's the baseline? I guess you will need some kind of evidence/argument that demonstrates that with and without the checklist results are markedly different. }
     \item Checklists are usually carried out in high
         workload environments, especially emergency ones
@@ -62,8 +64,15 @@
 \begin{itemize}
   \item Testing procedures in checklists are often neglected~\cite{nasa-design}
     \item There are some checklists that may not be fit
-        for certain scenarios \lfcomment{What check lists and what scenarios?}
+        for certain scenarios - e.g. ditching (water landing)
+        checklist for US Airways Flight 1549 assumed at least one engine
+        was running~\cite{AWE1549}, but in this scenario, there were none
+         \lfcomment{What check lists and what scenarios?}
     \item Some checklists may make pilots \enquote{stuck}
+      - not widely implemented, could be fixed with \enquote{opt out} points.
+      e.g. US Airways 1549, plane below 3000ft, could have skip to
+      later in the checklist to something like turn on APU, otherwise plane
+      will have limited control~\cite{AWE1549}.
     	\lfcomment{Yes, or might make them ignore the checklist. What criteria does that?}
     \item Checklists may take too long to carry out - Swissair 111
     	\lfcomment{Yes. See Checklist manifesto test}
@@ -71,7 +80,14 @@
 
 \subsubsection*{Rationale}
 \begin{itemize}
-    \item Test checklists in a simulated environment \lfcomment{Again, explain testing against what}
+    \item Test checklists in a simulated environment 
+      to find flaws in checklist for things like
+      \begin{itemize}
+        \item Can be done in an amount of time that will not endanger aircraft
+        \item Provides reproducible results
+        \item Procedures will not endanger aircraft or crew further (Crew refering to Checklist Manifesto with the cargo door blowout)
+      \end{itemize}
+      \lfcomment{Again, explain testing against what}
     \item Results in being able to see where to improve checklists
 \end{itemize}