diff --git a/donar.tex b/donar.tex
index 3c78df4..adb4b45 100644
--- a/donar.tex
+++ b/donar.tex
@@ -1,24 +1,18 @@
 
 %\section{Tor performances \\ \& VoIP requirements}
 
-\begin{frame}{What are voice calling requirements?}
-  \tikzsetnextfilename{rtapp}
-  \begin{tikzpicture}[scale=1]
-    \node (micro) at (0,0) {\includegraphics{img/microphone.pdf}};
-    \node (speaker) at (7.5,0) {\includegraphics{img/speaker.pdf}};
-    \draw[->, solid, black,line width=1mm] (micro) edge node[sloped,anchor=north,text width=6.5cm]{
-      \Large Call Requirements \\
-      \normalsize
-      \underline{Single call}\\
-      \textbf{Interactive:} $99^{th}$-perc delay $<$ 360 ms\\
-      \underline{System}\\
-      \textbf{Acceptable:} $>$ 80\% \\
-      \textbf{Drop:} $<$ 2\% \\
-      \textbf{Duration:} 5 min avg, up to 90 min \\
-      \textbf{Anonymity:} 2-way anonymity\\
-      \small Alice is anonymous to Bob,\\Bob is anonymous to Alice
-    } (speaker);
-  \end{tikzpicture}
+\begin{frame}{Our system requirements}
+  \Large Preliminary definitions\\
+  \normalsize \textbf{Interactive call:} $99^{th}$-perc delay $<$ 360 ms \\
+  \textbf{Call duration:} 5 min avg, up to 90 min \\
+
+  \vspace{0.5cm}
+  \Large System requirements \\
+  \normalsize
+	\textbf{Interactivity:} \textcolor{blue}{interactive calls $>$ 80\%}\\
+	\textbf{Stability:} \textcolor{blue}{dropped calls $<$ 2\%} \\
+	\textbf{Anonymity:} \textcolor{blue}{both caller and callee} \\
+  %\small Alice is anonymous to Bob,\\Bob is anonymous to Alice
 
 
 \begin{center}
@@ -158,25 +152,27 @@ Do Onion Service are stable enough?\\
 \end{column}
 \begin{column}{0.5\textwidth}
 
-\vspace{0.5cm}
+	\vspace{0.5cm}
 
-\normalsize \underline{5-minute calls $<$ 360ms}\\
-\Large \textcolor{red}{9\%}
+
+\normalsize \underline{Interactive call definition}\\$99^{th}$-perc delay $<$ 360 ms
 
 \vspace{0.5cm}
 
-\normalsize \underline{90-minute calls $<$ 360ms}\\
-\Large \textcolor{red}{3\%}
+\normalsize \underline{System interactivity}\\
+\Large \textcolor{blue}{$>$ 80\%} \normalsize goal, of interactive calls\\
+\Large \textcolor{red}{9\%} \normalsize for 5-minute calls\\
+\Large \textcolor{red}{3\%} \normalsize for 90-minute calls
 
 \end{column}
 \end{columns}
 
 \begin{center}
-\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} Onion Services' delays are too high
+\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} Calls are not interactive
 \end{center}
 \end{frame}
 
-\begin{frame}{What is we use 2-hop circuits?}
+\begin{frame}{And what if we use 2-hop circuits?}
 
 \tikzsetnextfilename{petitschema2}
 \begin{tikzpicture}
@@ -204,26 +200,25 @@ Do Onion Service are stable enough?\\
 
 \vspace{0.5cm}
 
+\normalsize \underline{Interactive call definition}\\$99^{th}$-perc delay $<$ 360 ms
 
-\normalsize \underline{5-minute calls $<$ 360ms}\\
-\Large \textcolor{red}{44\%}
 
 \vspace{0.5cm}
 
-\normalsize \underline{90-minute calls $<$ 360ms}\\
-\Large \textcolor{red}{23\%}
-
-\end{column}
+\normalsize \underline{System interactivity}\\
+\Large \textcolor{blue}{$>$ 80\%} \normalsize goal, interactive calls\\
+\Large \textcolor{red}{44\%} \normalsize for 5-minute calls\\
+\Large \textcolor{red}{23\%} \normalsize for 90-minute calls\end{column}
 \end{columns}
 
 \begin{center}
-\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} With 2-hop circuits, delays are still too high
+	\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} Calls are \underline{still} not interactive
 \end{center}
 \end{frame}
 
 
 
-\begin{frame}{Do onion services are stable enough for calls?}
+\begin{frame}{Are onion services stable enough for calls?}
 
 \tikzsetnextfilename{os3ss}
 \begin{tikzpicture}
@@ -266,40 +261,35 @@ Do Onion Service are stable enough?\\
 \vspace{0.3cm}
 
 
-\normalsize \underline{Dropped 5-minute calls}\\
-\Large \textcolor{red}{5\%} \normalsize for 2 hops \\
-\Large \textcolor{red}{10\%} \normalsize for 3 hops
-
-\vspace{0.3cm}
-
-\normalsize \underline{Dropped 90-minute calls}\\
-\Large \textcolor{red}{10\%} \normalsize for 2 hops\\
-\Large \textcolor{red}{17\%} \normalsize for 3 hops
+\normalsize \underline{System stability}\\
+\Large \textcolor{blue}{$<$ 2\%} \normalsize goal, dropped calls \\
+\Large \textcolor{red}{5\%} \normalsize for 2 hops, 5-minute calls \\
+\Large \textcolor{red}{10\%} \normalsize for 3 hops, 5-minute calls \\
+\Large \textcolor{red}{10\%} \normalsize for 2 hops, 90-minute calls \\
+\Large \textcolor{red}{17\%} \normalsize for 3 hops, 90-minute calls
 
 \end{column}
 \end{columns}
 
 \begin{center}
-\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} Calls are dropped too often ($>$ 2\%)
+\Large \includegraphics[scale=0.4]{img/stop.pdf} \color{red} Calls are not stable
 \end{center}
 \end{frame}
 
-
+\iffalse
 \begin{frame}{Understanding Latency Spike Properties}
 
 \includegraphics[width=0.7\textwidth]{img/circuit.pdf}
 
 
-\begin{center}
 For most circuits,\\
 \Large 
 \includegraphics[scale=0.4]{img/stop.pdf} \color{red} the $99^{th}$ latency is too high, \\
 \includegraphics[scale=0.4]{img/ok.pdf} \color{black!50!green} the median latency is acceptable,\\
 	\includegraphics[scale=0.6]{img/question.pdf} \color{blue} Tor is able to deliver \underline{only some} packets on time
-\end{center}
 
 \end{frame}
-
+\fi
 
 \section{Our contribution: Donar}
 
@@ -318,126 +308,41 @@ For most circuits,\\
 
 \begin{frame}{Donar Overview}
 
-\Large Donar is a set of \textbf{multipath} components \\
-  \underline{Alternate}, \underline{Double Send} and \underline{Path Ranking}
+\Large Donar is a \textbf{multipath} proxy\\
+	made of 2 components: \\
+  \underline{Link Selection} and \underline{Scheduling Policies}
 
 \vspace{0.7cm}
 
-We make 2 flavors with them:
 
-\vspace{0.5cm}
+\includegraphics[width=0.8\textwidth]{img/proxy.png}
 
-  \begin{columns}
-    \begin{column}{0.45\textwidth}
-\normalsize
-\underline{Anticipate Failures}
+%We make 2 flavors with them:
 
-\Large Donar Alternate
+%\vspace{0.5cm}
 
-\Large Donar Double Send
-    \end{column}
-    \begin{column}{0.45\textwidth}
-\normalsize
-\underline{React to Failures}
-
-\Large + Path Ranking
-
-\Large + Path Ranking
-    \end{column}
-  \end{columns}
+%  \begin{columns}
+%    \begin{column}{0.45\textwidth}
+%\normalsize
+%\underline{Anticipate Failures}
+%
+%\Large Donar Alternate
+%
+%\Large Donar Double Send
+%    \end{column}
+%    \begin{column}{0.45\textwidth}
+%\normalsize
+%\underline{React to Failures}
+%
+%\Large + Path Ranking
+%
+%\Large + Path Ranking
+%    \end{column}
+%  \end{columns}
 \end{frame}
 
 
-\begin{frame}[t]{Alternate Strategy}
-\tikzsetnextfilename{padding}
-\begin{tikzpicture}[scale=1]
-  \node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
-  \node[below=0cm of alice] (alicet) {Alice};
-  \node (bob) at (10,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
-  \node[below=0cm of bob] (bobt) {Bob};
-  \node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
-  \node[circle,fill=black,minimum size=1mm,left=0cm of bob] (j4) {};
-  \coordinate (a1) at (3,6.5) {};
-  \coordinate (a2) at (3,5.5) {};
-  \coordinate (a3) at (3,4.5) {};
-  \coordinate (a4) at (3,3.5) {};
-  \coordinate (b1) at (8,6.5) {};
-  \coordinate (b2) at (8,5.5) {};
-  \coordinate (b3) at (8,4.5) {};
-  \coordinate (b4) at (8,3.5) {};
-  \coordinate (a5) at (3,2.5) {};
-  \coordinate (a6) at (3,7.5) {};
-  \coordinate (b5) at (8,2.5) {};
-  \coordinate (b6) at (8,7.5) {};
-  \draw[-, solid, black] (j0) -- (a1) -- (b1) -- (j4);
-  \draw[-, solid, black] (j0) -- (a2) -- (b2) -- (j4);
-  \draw[-, solid, black] (j0) -- (a3) -- (b3) -- (j4);
-  \draw[-, solid, black] (j0) -- (a4) -- (b4) -- (j4);
-  \draw[-, solid, black] (j0) -- (a5) -- (b5) -- (j4);
-  \draw[-, solid, black] (j0) -- (a6) -- (b6) -- (j4);
-
-
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p11) at (7,5.5) {1};
-    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p11p) at (6.5,5.5) {\color{black}1};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13) at (4.6,3.5) {3};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13p) at (4.1,3.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22) at (5.8,4.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22p) at (5.3,4.5) {1};
-  \node[text width=10cm,align=center] (expl) at (5.5, 1.0) {\Large 
-    \textbf{Alternate} schedule packets across links and leverages Tor's padding
-  };
-\end{tikzpicture}
-\end{frame}
-
-\begin{frame}[t]{Donar Double Send}
-\tikzsetnextfilename{doublesend}
-\begin{tikzpicture}[scale=1]
-  \node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
-  \node[below=0cm of alice] (alicet) {Alice};
-  \node (bob) at (10,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
-  \node[below=0cm of bob] (bobt) {Bob};
-  \node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
-  \node[circle,fill=black,minimum size=1mm,left=0cm of bob] (j4) {};
-  \coordinate (a1) at (3,6.5) {};
-  \coordinate (a2) at (3,5.5) {};
-  \coordinate (a3) at (3,4.5) {};
-  \coordinate (a4) at (3,3.5) {};
-  \coordinate (b1) at (8,6.5) {};
-  \coordinate (b2) at (8,5.5) {};
-  \coordinate (b3) at (8,4.5) {};
-  \coordinate (b4) at (8,3.5) {};
-  \coordinate (a5) at (3,2.5) {};
-  \coordinate (a6) at (3,7.5) {};
-  \coordinate (b5) at (8,2.5) {};
-  \coordinate (b6) at (8,7.5) {};
-  \draw[-, solid, black] (j0) -- (a1) -- (b1) -- (j4);
-  \draw[-, solid, black] (j0) -- (a2) -- (b2) -- (j4);
-  \draw[-, solid, black] (j0) -- (a3) -- (b3) -- (j4);
-  \draw[-, solid, black] (j0) -- (a4) -- (b4) -- (j4);
-
-  \draw[-, solid, black] (j0) -- (a5) -- (b5) -- (j4);
-  \draw[-, solid, black] (j0) -- (a6) -- (b6) -- (j4);
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p11) at (7,5.5) {1};
-    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p11p) at (6.5,5.5) {\color{black}1};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13) at (4.6,3.5) {3};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13p) at (4.1,3.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22) at (5.8,4.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22p) at (5.3,4.5) {1};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p31) at (7,7.5) {1};
-    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p31p) at (6.5,7.5) {\color{black}1};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p33) at (4.6,2.5) {3};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p33p) at (4.1,2.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42) at (5.8,6.5) {2};
-    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42p) at (5.3,6.5) {1};
-  \node[text width=10cm,align=center] (expl) at (5.5, 1.0) {\Large 
-\textbf{Double Send} extends Alternate by adding on-wire duplication
-\normalsize
-  };
-\end{tikzpicture}
-\end{frame}
-
-
-\begin{frame}[t]{Path Ranking}
+\begin{frame}[t]{Link Selection}
 \tikzsetnextfilename{scheduling}
 \begin{tikzpicture}[scale=1]
   \node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
@@ -474,12 +379,13 @@ We make 2 flavors with them:
   \node[below=0cm of a5] (a5t) {~F};
 
   \only<1> {
-    \draw[-, solid, black] (j0) -- (a2) -- (b2) -- (j4);
-    \draw[-, solid, black] (j0) -- (a3) -- (b3) -- (j4);
-    \draw[-, solid, black] (j0) -- (a1) -- (b1) -- (j4);
-    \draw[-, solid, black] (j0) -- (a6) -- (b6) -- (j4);
+    \draw[-, solid, black!30!cyan, line width = 0.4mm] (j0) -- (a2) -- (b2) -- (j4);
+    \draw[-, solid, black!30!cyan, line width = 0.4mm] (j0) -- (a3) -- (b3) -- (j4);
+    \draw[-, solid, black!30!cyan, line width = 0.4mm] (j0) -- (a1) -- (b1) -- (j4);
+    \draw[-, solid, black!30!cyan, line width = 0.4mm] (j0) -- (a6) -- (b6) -- (j4);
 
 
+    \iffalse
     \node[rectangle,draw=black,fill=white,minimum width=5mm] (p11) at (5.8,5.5) {1};
     \node[rectangle,draw=black,fill=black,minimum width=5mm] (p11p) at (5.3,5.5) {\color{black}1};
     \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13) at (4.1,5.5) {3};
@@ -492,11 +398,12 @@ We make 2 flavors with them:
     \node[rectangle,draw=black,fill=white,minimum width=5mm] (p33p) at (4.1,7.5) {2};
     \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42) at (7,6.5) {2};
     \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42p) at (6.5,6.5) {1};
+    \fi
 
 
-  \node[text width=10cm,align=left] (expl) at (5.5, 1.2) {\Large 
-  \Large \includegraphics[scale=0.6]{img/question.pdf} \color{blue} We want to schedule only on fastest links \\
-  };
+    \node[text width=10cm,align=left] (expl) at (5.5, 1.2) {\Large 
+    \Large \includegraphics[scale=0.6]{img/question.pdf} \color{blue} We want to schedule only on fastest links \\
+    };
   }
 
   \only<2> {
@@ -553,26 +460,127 @@ We make 2 flavors with them:
 \end{tikzpicture}
 \end{frame}
 
+
+
+
+\begin{frame}[t]{Scheduling Policy: Alternate}
+\tikzsetnextfilename{padding}
+\begin{tikzpicture}[scale=1]
+  \node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
+  \node[below=0cm of alice] (alicet) {Alice};
+  \node (bob) at (10,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
+  \node[below=0cm of bob] (bobt) {Bob};
+  \node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
+  \node[circle,fill=black,minimum size=1mm,left=0cm of bob] (j4) {};
+  \coordinate (a1) at (3,6.5) {};
+  \coordinate (a2) at (3,5.5) {};
+  \coordinate (a3) at (3,4.5) {};
+  \coordinate (a4) at (3,3.5) {};
+  \coordinate (b1) at (8,6.5) {};
+  \coordinate (b2) at (8,5.5) {};
+  \coordinate (b3) at (8,4.5) {};
+  \coordinate (b4) at (8,3.5) {};
+  \coordinate (a5) at (3,2.5) {};
+  \coordinate (a6) at (3,7.5) {};
+  \coordinate (b5) at (8,2.5) {};
+  \coordinate (b6) at (8,7.5) {};
+  \draw[-, solid, black] (j0) -- (a1) -- (b1) -- (j4);
+  \draw[-, solid, black] (j0) -- (a2) -- (b2) -- (j4);
+  \draw[-, solid, black] (j0) -- (a3) -- (b3) -- (j4);
+  \draw[-, solid, black] (j0) -- (a4) -- (b4) -- (j4);
+  \draw[-, solid, black] (j0) -- (a5) -- (b5) -- (j4);
+  \draw[-, solid, black] (j0) -- (a6) -- (b6) -- (j4);
+
+
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p11) at (7,5.5) {1};
+    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p11p) at (6.5,5.5) {\color{black}1};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13) at (4.6,3.5) {3};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13p) at (4.1,3.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22) at (5.8,4.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22p) at (5.3,4.5) {1};
+  \node[text width=10cm,align=center] (expl) at (5.5, 1.0) {\Large 
+    \textbf{Alternate} schedule packets across links and leverages Tor's padding
+  };
+\end{tikzpicture}
+\end{frame}
+
+\begin{frame}[t]{Scheduling Policy: Double Send}
+\tikzsetnextfilename{doublesend}
+\begin{tikzpicture}[scale=1]
+  \node (alice) at (1,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
+  \node[below=0cm of alice] (alicet) {Alice};
+  \node (bob) at (10,5) {\includegraphics[scale=0.26]{img/computer.pdf}};
+  \node[below=0cm of bob] (bobt) {Bob};
+  \node[circle,fill=black,minimum size=1mm,right=0cm of alice] (j0) {};
+  \node[circle,fill=black,minimum size=1mm,left=0cm of bob] (j4) {};
+  \coordinate (a1) at (3,6.5) {};
+  \coordinate (a2) at (3,5.5) {};
+  \coordinate (a3) at (3,4.5) {};
+  \coordinate (a4) at (3,3.5) {};
+  \coordinate (b1) at (8,6.5) {};
+  \coordinate (b2) at (8,5.5) {};
+  \coordinate (b3) at (8,4.5) {};
+  \coordinate (b4) at (8,3.5) {};
+  \coordinate (a5) at (3,2.5) {};
+  \coordinate (a6) at (3,7.5) {};
+  \coordinate (b5) at (8,2.5) {};
+  \coordinate (b6) at (8,7.5) {};
+  \draw[-, solid, black] (j0) -- (a1) -- (b1) -- (j4);
+  \draw[-, solid, black] (j0) -- (a2) -- (b2) -- (j4);
+  \draw[-, solid, black] (j0) -- (a3) -- (b3) -- (j4);
+  \draw[-, solid, black] (j0) -- (a4) -- (b4) -- (j4);
+
+  \draw[-, solid, black] (j0) -- (a5) -- (b5) -- (j4);
+  \draw[-, solid, black] (j0) -- (a6) -- (b6) -- (j4);
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p11) at (7,5.5) {1};
+    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p11p) at (6.5,5.5) {\color{black}1};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13) at (4.6,3.5) {3};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p13p) at (4.1,3.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22) at (5.8,4.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p22p) at (5.3,4.5) {1};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p31) at (7,7.5) {1};
+    \node[rectangle,draw=black,fill=black,minimum width=5mm] (p31p) at (6.5,7.5) {\color{black}1};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p33) at (4.6,2.5) {3};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p33p) at (4.1,2.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42) at (5.8,6.5) {2};
+    \node[rectangle,draw=black,fill=white,minimum width=5mm] (p42p) at (5.3,6.5) {1};
+  \node[text width=10cm,align=center] (expl) at (5.5, 1.0) {\Large 
+\textbf{Double Send} extends Alternate by adding on-wire duplication
+\normalsize
+  };
+\end{tikzpicture}
+\end{frame}
+
+\begin{frame}{Security}
+
+Multiple paths = less security?
+
+\vspace{0.5cm}
+\includegraphics[width=0.8\textwidth]{img/donar-tor-diagram.pdf}
+
+Guards = Fixed relays = Decouple path opening from de-anonimization
+
+\end{frame}
+
 \section{Evaluation}
 
 \begin{frame}[t]{Evaluation Setup}
 \underline{Configurations \& Goals:}\\Same as our preliminary analysis
 
-\underline{Our algorithms}
-
+\underline{Our 2 Variants}
 
 \normalsize
 \textbf{Donar Alternate}\\
-Alternate + Ranking (6/12 active paths)
+Scheduling policy: Alternate (use less bandwidth)
 
 \textbf{Donar Double Send}\\
-Double Send + Ranking (6/12 active paths)
+Sechduling policy: Double Send (better stability)
 
 \scriptsize Implemented in \texttt{C}, notable API/lib: \texttt{epoll}, \texttt{gstreamer}, \texttt{glib}\\
 
 \normalsize
 
-\underline{State of the Art algorithms}
+\underline{Baselines}
 
 \textbf{Simple:} Baseline introduced in the preliminary analysis \\
 %Same data consumption as Donar Alternate
@@ -605,7 +613,8 @@ Double Send + Ranking (6/12 active paths)
 \begin{column}{0.5\textwidth}
 \vspace{1cm}
 
-\normalsize \underline{Acceptable 90-minute calls}\\
+\normalsize \underline{System interactivity}\\
+\large \textcolor{blue}{$>$ 80\%} \normalsize goal, interactive calls \\
 \large \textcolor{black!50!green}{87\%} \normalsize for Donar Alternate\\
 \large \textcolor{black!50!green}{95\%} \normalsize for Donar Double Send\\
 \large \textcolor{red}{25\%} \normalsize for Torfone\\
@@ -651,7 +660,8 @@ Double Send + Ranking (6/12 active paths)
 
 \vspace{1cm}
 
-\normalsize \underline{Acceptable 90-minute calls}\\
+\normalsize \underline{System interactivity}\\
+\large \textcolor{blue}{$>$ 80\%} \normalsize goal, interactive calls \\
 \large \textcolor{red}{58\%} \normalsize for Donar Alternate\\
 \large \textcolor{black!50!green}{87\%} \normalsize for Donar Double Send\\
 \large \textcolor{red}{31\%} \normalsize for Torfone\\
@@ -672,10 +682,19 @@ Double Send + Ranking (6/12 active paths)
 
 \includegraphics[width=0.8\textwidth]{img/call_drop.pdf}
 
-\begin{center}
+	\begin{columns}
+		\begin{column}{0.5\textwidth}
+\normalsize \underline{System stability}\\
+\large \textcolor{blue}{$<$ 2\%} \normalsize goal, dropped calls \\
+\large \textcolor{black!50!green}{0\%} \normalsize Donar Alternate, 2 hops\\
+\large \textcolor{black!50!green}{0\%} \normalsize Donar Double Send, 2 hops + default\\
+
+		\end{column}
+		\begin{column}{0.5\textwidth}
 \large \includegraphics[scale=0.4]{img/ok.pdf} \color{black!50!green} Donar Alternate \\
 \large \includegraphics[scale=0.4]{img/ok.pdf} \color{black!50!green} Donar Double Send
-\end{center}
+		\end{column}
+	\end{columns}
 \end{frame}
 
 \section{Conclusion}
diff --git a/img/donar-tor-diagram.pdf b/img/donar-tor-diagram.pdf
new file mode 100644
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diff --git a/img/nsdi.png b/img/nsdi.png
new file mode 100644
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diff --git a/main.tex b/main.tex
index e5d9aa5..312c05d 100644
--- a/main.tex
+++ b/main.tex
@@ -67,7 +67,7 @@ diagonal fill/.style 2 args={fill=#2, path picture={
 
 
 \title{Donar: Anonymous VoIP over Tor}
-\date{April 4, 2022}
+\date{\includegraphics[height=0.5cm]{img/nsdi.png} -  April 4, 2022 - Renton, WA, USA}
 \author{Yérom-David Bromberg, \underline{Quentin Dufour}, Davide Frey, Etienne Rivière}
 \institute{Univ Rennes, Inria, CNRS, IRISA - UCLouvain, Belgium}
 \begin{document}