diff --git a/.gitignore b/.gitignore
index 4b23ac3eceb12d0598fa3a7a836353036ba6b7d1..b23994ee8d148b42a11298f82aee39a3427fef18 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ slides.toc
 handson.dvi
 figures/.directory
 slides.pdf
+.DS_Store
diff --git a/slides.tex b/slides.tex
index 4cd41677a5b005304d4d5e99f764f5c4c02dae45..f5096b11e3fc73a48bd31ce7f3a42d27b74fa446 100644
--- a/slides.tex
+++ b/slides.tex
@@ -43,6 +43,12 @@
   \onslide <1->\pgfimage[height=.5\textheight]{figures/hilbert.jpg}
 }
 
+\frame{
+  \frametitle{How?}
+  \pgfimage[width=.9\textwidth]{lifecycle.png}
+}
+
+
 \frame{
   \frametitle{Version Control?}
   \begin{itemize} [<+-| alert@+>]