diff --git a/slides.tex b/slides.tex
index 02befb1..7615b6e 100644
--- a/slides.tex
+++ b/slides.tex
@@ -16,6 +16,7 @@
 \usepackage{pifont}
 \usepackage{multirow}
 \usepackage[many]{tcolorbox}
+\usepackage[absolute,overlay]{textpos}
 
 \usepackage{texlib/my_listings}
 \usepackage{texlib/specific}
@@ -325,17 +326,31 @@ Segmentation fault.
 \begin{frame}
     \newcommand{\firsttblrows}{
 \tblrowval{\hspace{-2ex}<{\bf foo}>:}{}{\textbf{CFA}}{\textbf{ra}}
-\rowonly<3>{\tblhl{}}  \tblrowval{push}{\%r15}{rsp+8}{c-8}
-\rowonly<4>{\tblhl{}} \tblrowval{push}{\%r14}{rsp+16}{c-8}
-\rowonly<5>{\tblhl{}} \tblrowval{mov}{\$0x3,\%eax}{rsp+24}{c-8}
-\rowonly<6>{\tblhl{}} \tblrowval{push}{\%r13}{rsp+24}{c-8}
+\rowonly<4>{\tblhl{}}  \tblrowval{push}{\%r15}{rsp+8}{c-8}
+\rowonly<5>{\tblhl{}} \tblrowval{push}{\%r14}{rsp+16}{c-8}
+\rowonly<6>{\tblhl{}} \tblrowval{mov}{\$0x3,\%eax}{rsp+24}{c-8}
+\rowonly<7>{\tblhl{}} \tblrowval{push}{\%r13}{rsp+24}{c-8}
 \tblrowval{push}{\%r12}{rsp+32}{c-8}
 \tblrowval{push}{\%rbp}{rsp+40}{c-8}
 \tblrowval{push}{\%rbx}{rsp+48}{c-8}
 \tblrowval{sub}{\$0x68,\%rsp}{rsp+56}{c-8}
 }
 
-    \only<-8>{
+
+    {\only<3>{
+		\begin{textblock*}{0.90\textwidth}[0.5,0.5](0.5\paperwidth,0.5\paperheight)%
+			\begin{tcolorbox}[halign=center, colframe=red, colback=Lavender]
+				\large
+				\alert{\bf Assumptions:}
+                \begin{itemize}
+                    \item the assembly is was generated by a compiler
+                    \item which also generated unwinding data
+                    \item and I have a reliable DWARF parser
+                \end{itemize}
+			\end{tcolorbox}
+		\end{textblock*}
+	}}
+    \only<-9>{
         \begin{table}
             \ttfamily\large
             \begin{tabularx}{0.9\linewidth}{
@@ -353,16 +368,16 @@ Segmentation fault.
         \blknote{
             \centering
         \begin{overlayarea}{0.9\textwidth}{4.8ex}
-            \only<3>{Upon function call, \alert{ra = *(\reg{rsp})}}
-            \only<4>{\texttt{push} decreases \reg{rsp} by 8: %
+            \only<4>{Upon function call, \alert{ra = *(\reg{rsp})}}
+            \only<5>{\texttt{push} decreases \reg{rsp} by 8: %
                 \alert{ra = *(\reg{rsp} + 8)}}
-            \only<5>{and again: %
+            \only<6>{and again: %
                 \alert{ra = *(\reg{rsp} + 16)}}
-            \only<6>{This \texttt{mov} leaves \reg{rsp} untouched: %
+            \only<7>{This \texttt{mov} leaves \reg{rsp} untouched: %
                 \alert{ra = *(\reg{rsp} + 16)}}
-            \only<7>{The unwinding table captures an \alert{abstract execution}
+            \only<8>{The unwinding table captures an \alert{abstract execution}
             of the code\ldots}
-            \only<8>{\ldots and thus can be \alert{synthesized from the binary}.}
+            \only<9>{\ldots and thus can be \alert{synthesized from the binary}.}
         \end{overlayarea}
     }
     }