--- a/slides/slides02.tex	Sat Oct 04 13:17:18 2014 +0100
+++ b/slides/slides02.tex	Sat Oct 04 13:32:51 2014 +0100
@@ -61,12 +61,12 @@
 \only<2>{
 \begin{textblock}{11}(3.5,12)
 \begin{tabular}{c}
-\includegraphics[scale=0.12]{pics/ariane.jpg}\\[-2mm]
+\includegraphics[scale=0.12]{../pics/ariane.jpg}\\[-2mm]
 \footnotesize Murphy's computer
 \end{tabular}
 \begin{tabular}{c}
-\includegraphics[scale=0.15]{pics/mobile.jpg}\;
-\includegraphics[scale=0.06]{pics/pinsentry.jpg}\\[-2mm]
+\includegraphics[scale=0.15]{../pics/mobile.jpg}\;
+\includegraphics[scale=0.06]{../pics/pinsentry.jpg}\\[-2mm]
 \footnotesize Satan's computers
 \end{tabular}
 \end{textblock}}
@@ -271,7 +271,7 @@
 \frametitle{Traditional Ballot Boxes}
 
 \begin{center}
-\includegraphics[scale=2.5]{pics/ballotbox.jpg}
+\includegraphics[scale=2.5]{../pics/ballotbox.jpg}
 \end{center}\pause\bigskip
 
 mechanical, but they need a ``protocol''
@@ -435,7 +435,7 @@
 \end{enumerate}
 
 \begin{center}
-\includegraphics[scale=1.5]{pics/ballotbox.jpg}
+\includegraphics[scale=1.5]{../pics/ballotbox.jpg}
 \end{center}
 
 
@@ -467,7 +467,7 @@
 
 \only<2>{
 \begin{center}
-\includegraphics[scale=0.8]{pics/tweet.jpg}\\
+\includegraphics[scale=0.8]{../pics/tweet.jpg}\\
 \footnotesize William M.~Tweed, US Politician in 1860's\\
 ``As long as I count the votes, what are you going to do about it?''
 \end{center}}
@@ -501,14 +501,14 @@
 \item<1-> Lever Voting Machines (ca.~1930 - 1990)
 \only<1>{
 \begin{center}
-\includegraphics[scale=0.56]{pics/leavermachine.jpg}
+\includegraphics[scale=0.56]{../pics/leavermachine.jpg}
 \end{center}
 }
 \item<2->Punch Cards (ca.~1950 - 2000)
 \only<2>{
 \begin{center}
-\includegraphics[scale=0.5]{pics/punchcard1.jpg}\;\;
-\includegraphics[scale=0.46]{pics/punchcard2.jpg}
+\includegraphics[scale=0.5]{../pics/punchcard1.jpg}\;\;
+\includegraphics[scale=0.46]{../pics/punchcard2.jpg}
 \end{center}
 }
 \end{itemize}
@@ -523,9 +523,9 @@
 
 \begin{center}
 \begin{tabular}{c}
-\includegraphics[scale=0.45]{pics/dre1.jpg}\; 
-\includegraphics[scale=0.40]{pics/dre2.jpg}\\\hline\\
-\includegraphics[scale=0.5]{pics/opticalscan.jpg} 
+\includegraphics[scale=0.45]{../pics/dre1.jpg}\; 
+\includegraphics[scale=0.40]{../pics/dre2.jpg}\\\hline\\
+\includegraphics[scale=0.5]{../pics/opticalscan.jpg} 
 \end{tabular}
 \end{center}
 
@@ -559,7 +559,7 @@
 usually no papertrail
 
 \begin{center}
-\includegraphics[scale=0.56]{pics/dre1.jpg}
+\includegraphics[scale=0.56]{../pics/dre1.jpg}
 \end{center}
 
 
@@ -613,7 +613,7 @@
 
 \begin{center}
 \begin{tabular}{c}
-\includegraphics[scale=0.5]{pics/opticalscan.jpg} 
+\includegraphics[scale=0.5]{../pics/opticalscan.jpg} 
 \end{tabular}
 \end{center}\pause
 
@@ -633,8 +633,8 @@
 
 \begin{center}
 \begin{tabular}{c}
-\includegraphics[scale=1.05]{pics/indiaellection.jpg}\;\;
-\includegraphics[scale=0.40]{pics/india1.jpg}
+\includegraphics[scale=1.05]{../pics/indiaellection.jpg}\;\;
+\includegraphics[scale=0.40]{../pics/india1.jpg}
 \end{tabular}
 \end{center}\medskip\pause
 
@@ -678,7 +678,7 @@
 \frametitle{Student In-Lecture Polling}
 
 \begin{center}
-\includegraphics[scale=0.3]{pics/clicker.png}
+\includegraphics[scale=0.3]{../pics/clicker.png}
 \end{center}
 
 \begin{itemize}
@@ -698,12 +698,12 @@
 \begin{itemize}
 \item anonymity through one-time pads
 \begin{center}
-\includegraphics[scale=0.3]{pics/tan.jpg}
+\includegraphics[scale=0.3]{../pics/tan.jpg}
 \end{center}\bigskip\pause
 
 \item solving the problem of distribution
 \begin{center}
-\includegraphics[scale=0.3]{pics/bulletin.jpg}
+\includegraphics[scale=0.3]{../pics/bulletin.jpg}
 \end{center}
 
 \end{itemize}
@@ -716,7 +716,7 @@
 \begin{frame}[c]
 
 \begin{center}
-\includegraphics[scale=0.56]{pics/Voting1.png}
+\includegraphics[scale=0.56]{../pics/Voting1.png}
 \end{center}
 
 
@@ -728,7 +728,7 @@
 \begin{frame}[c]
 
 \begin{center}
-\includegraphics[scale=0.56]{pics/Voting2.png}
+\includegraphics[scale=0.56]{../pics/Voting2.png}
 \end{center}
 
 
@@ -740,7 +740,7 @@
 \begin{frame}[c]
 
 \begin{center}
-\includegraphics[scale=0.56]{pics/Voting3.png}
+\includegraphics[scale=0.56]{../pics/Voting3.png}
 \end{center}
 
 
@@ -752,7 +752,7 @@
 \begin{frame}[c]
 
 \begin{center}
-\includegraphics[scale=0.56]{pics/Voting4.png}
+\includegraphics[scale=0.56]{../pics/Voting4.png}
 \end{center}
 
 
@@ -914,12 +914,12 @@
 \begin{columns}[b]
 \begin{column}{.4\textwidth}
 \centering
-\includegraphics[scale=1.2]{pics/barrier.jpg}\\
+\includegraphics[scale=1.2]{../pics/barrier.jpg}\\
 first lecture
 \end{column}
 \begin{column}<2>{.4\textwidth}
 \centering
-\includegraphics[scale=0.32]{pics/trainwreck.jpg}\\
+\includegraphics[scale=0.32]{../pics/trainwreck.jpg}\\
 next week
 \end{column}
 \end{columns}