diff --git a/slides.tex b/slides.tex
index 732cc81..acf6ea3 100644
--- a/slides.tex
+++ b/slides.tex
@@ -1,6 +1,6 @@
 % vim: spell spelllang=en
 
-\documentclass[11pt]{beamer}
+\documentclass[11pt,xcolor={usenames,dvipsnames}]{beamer}
 \usetheme{Warsaw}
 \usepackage[utf8]{inputenc}
 \usepackage[english]{babel}
@@ -11,6 +11,7 @@
 \usepackage{graphicx}
 \usepackage{my_listings}
 \usepackage{math}
+\usepackage{tikz}
 \setbeamertemplate{navigation symbols}{}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -29,12 +30,59 @@
     Slides: \url{https://tiny.tobast.fr/m2-absint-slides} \\
     Article: \url{https://tiny.tobast.fr/m2-absint-article}
 
-	\tableofcontents
+	%\tableofcontents
 \end{frame}
 
 %\begin{frame}
 %\tableofcontents
 %\end{frame}
 
-\end{document}
+\section{Just-In-Time compilation}
 
+\begin{frame}{Just-In-Time (JIT) compilation}
+    \begin{itemize}
+        \item Dynamic languages: \alert{hard to compile} (rely on runtime)
+        \item Yet \alert{ubiquitous}: javascript, python, \ldots
+        \item Idea: compile \alert{at runtime} the \alert{most used} program
+            parts
+        \item Used in browsers (JS), PyPy (Python), most JVMs (Java), \ldots
+    \end{itemize}
+
+    \vspace{1em}
+
+    \begin{center}
+        \begin{tikzpicture}[xscale=0.6, fill=GreenYellow]
+            \fill (-8, 0) rectangle (-4, 2)
+                node[pos=.5] {Source code};
+            \fill (-2, 0) rectangle (2, 2)
+                node[pos=.5] {Byte code};
+            \fill (4, 0) rectangle (8, 2)
+                node[pos=.5, align=center] {Byte/machine\\code};
+
+            \draw[->, line width=2] (-4,1) -- (-2,1);
+            \draw[->, line width=2] (2,1) -- (4,1);
+            \node [rotate=60, anchor=west] at (-3.75, 1.1) {Bytecode compiler};
+            \node [rotate=60, anchor=west] at (2.25, 1.1) {JIT compiler};
+
+            \draw[RubineRed, line width=1] (0, 2) -- (0, 4);
+            \draw[RubineRed, line width=1, dotted] (0, 0) -- (0, 2);
+            \draw[RubineRed, line width=1] (0, -0.2) -- (0, 0);
+
+            \node [rotate=90, anchor=south, RubineRed] at (-0.1, 3) {Offline};
+            \node [rotate=-90, anchor=south, RubineRed] at (0.1, 3) {Runtime};
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{How is it done?}
+    \begin{itemize}
+        \item \textit{Article claim}: mostly done using \alert{hot paths}
+            within loops (in a single function); most speedup is \alert{type
+            specialization}.
+        \item Wrong. But, heh. (Inlining, translation to machine code, global
+            optimizations, lock elimination, non-volatile-write
+            elimination/propagation, \ldots)
+    \end{itemize}
+\end{frame}
+
+\end{document}